Mir Station itself works fine in Orbiter 2006p1, and even in Orbiter 2010. I suppose since your using 2006p1 most of the required addons would work as is(provided you installed them first:lol

, though some may have problems in Orbiter 2010, and Thorton's Proton 1.0 is no longer available since it was replaced by a newer version. Spacecraft3, although not called out in the required addon list, is required though. Spacecraft3 works as intended in Orbiter 2006p1, and much the same in Orbiter 2010, so I believe you'll have no problems with it.
Good news is, since you're after a replacement for the default Mir, you don't have to worry about the other required addons except Spacecraft3. I don't believe you want to try building Mir like it was done way back when. You are going to have to do more than just copying over a few meshes and texture files to use this Mir in place of the default one, but in the end it's a bit of scenario editing. You have two options to get to that part:
Option 1) Simply take all the extracted files and folders from the .rar this came in and copy it into your Orbiter install. So long as you preserved the folders while extracting, this is the easy and painless way to install this Mir. Skip past Option 2 if you want to find out what is next, or keep reading.
Option 2) Figure out what files you need, and then copy only those out of the extracted folder. You must first figure out which assembled Mir you want and open it's .ini file; since you most likely want Mir in it's Amazing Final Form, pick Mir_VI.ini and open it in Notepad. Inside we find Mir uses a exhaust texture, Mir_Station/exhaust_crcs, and a mesh named Mir_Station/Mir_VI. Notice the "Mir_Station\" bit? It indicate that the files are in a folder named Mir_Station, inside the folder Orbiter will look in for the mesh or texture. So now we have three files to copy over, and we will stick them in the following locations in our Orbiter install:
Mir_VI.ini goes into Spacecraft folder inside the Config folder(Spacecraft3 should have created this folder for you, if not, you likely didn't install it yet.)
exhaust_crcs.dds goes into the folder Mir Station inside the Textures folder( you'll have to make the Mir_Station folder yourself)
Mir_VI.msh goes into the folder Mir_Station in the Meshes folder
We're not done yet though. You might have noticed there's a bunch of other texture files along with exhaust_crcs.dd, and we are going to need a bunch of them. But which ones though? To find out, we open up Mir_VI.msh in Notepad. Don't worry that Notepad doesn't seem to be the right tool for opening 3d files, just take it from me that it works. Inside you'll find a numerical representation of the mesh, laid out in masses of numbers. We will pass this by and move to the very bottom of the file, where we will see this:
Code:
TEXTURES 20
Mir_Station\Core_6.dds
Mir_Station\spectrN.dds
Mir_Station\core_2.dds
Mir_Station\Dockring.dds
Mir_Station\core_1_1.dds
Mir_Station\Solar1.dds
Mir_Station\Solar_4.dds
Mir_Station\spectr.dds
Mir_Station\kvant_1.dds
Mir_Station\Side1.dds
Mir_Station\rad.dds
Mir_Station\Side.dds
Mir_Station\dock.dds
Mir_Station\Solar_2.dds
Mir_Station\Solar_3.dds
Mir_Station\doc.dds
Mir_Station\grapple.dds
Mir_Station\ODSSM.dds
Mir_Station\point.dds
Mir_Station\core_5.dds
It's the textures the mesh Mir_VI.msh uses. Copy them into the folder Mir_Station inside the Textures folder and now you have what you need.
Having done either Option 1 or 2, what's next?
Next is to actually get a Mir from this addon in a scenario to replace the default one, and this means editing a scenario file. If you took option two, you only have Mir in it's Final Ultimate Form(Mir_VI), so we have to find a scenario file from with that particular Mir. If you took Option 1 any Mir would work, but let's use Mir_VI anyway. So we'll first look in the Scenarios folder, then the Mir Space Station folder. Inside is three folders: Launch Scenarios, Mir Configurations, and Misc. Since I'm your guide, I'll pick Mir Configurations for you, and once there we see a bunch of scenarios. Using what I remember about the Mir, I know Priroda was the last module added to Mir, and it's also the last scenario file. Opening it in Notepad, we look to see what ships are here, and find this in the relevant section:
Code:
BEGIN_SHIPS
[B]Mir_VI[/B]:spacecraft\spacecraft3
STATUS Orbiting Earth
RPOS 5751919.43 3197208.99 -1534320.11
RVEL 3941.948 -6451.150 1364.056
AROT -80.67 -32.91 98.49
VROT -0.07 -0.00 -0.00
PRPLEVEL 0:0.849
[U]DOCKINFO 0:0,TM-23 3:0,Cosmonaut1[/U]
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
SEQ 0 -2 0.318200
SEQ 1 -2 0.151500
SEQ 2 -2 0.000700
END
TM-23:soyuztma
STATUS Orbiting Earth
RPOS 5751925.77 3197199.34 -1534318.53
RVEL 3941.948 -6451.150 1364.056
AROT 99.33 32.91 81.51
VROT 0.07 -0.00 0.00
RCSMODE 2
PRPLEVEL 0:0.615
DOCKINFO 0:0,Mir_VI
NAVFREQ 0 0
XPDR 0
CONFIGURATION 0
PANELS 1.000
END
Cosmonaut1:orlan
STATUS Orbiting Earth
RPOS 5751932.53 3197210.01 -1534322.05
RVEL 3941.948 -6451.150 1364.056
AROT -80.67 -32.91 98.49
VROT -0.07 -0.00 -0.00
RCSMODE 2
PRPLEVEL 0:0.840
DOCKINFO 0:3,Mir_VI
NAVFREQ 130 130
END
END_SHIPS
Yay, Mir_VI(
bold) is in this scenario, maeaning we found Mir in it's Ultimate Super Form. We also see a few other ships, and since we don't have them installed, we simply can't copy them over and expect them to work. However, they are docked to Mir, as shown with the underlining in Mir's Ship entry. Not a big crisis, as we can deal with this easily later. Anyway, we want to have this Mir replace the default one, so we ought to find a scenario with the default Mir. I'll use the scenario file inside the Checklists folder called "Mission 2- ISS to Mir". Now we'll find Mir in there, in the ships part of the file. It should look like this(minus the underlining, I'll explain why that's there in a moment):
Code:
Mir:Mir
[U] STATUS Orbiting Earth
RPOS -2351755.31 -379917.64 -6234978.51
RVEL 7235.564 -160.954 -2708.618
AROT 1.60 -46.80 88.82[/U]
IDS 0:540 100 1:542 100 2:544 100
XPDR 482
END
Here is Mir_VI again for comparison(again, the purpose of underling will be shown in a moment):
Code:
Mir_VI:spacecraft\spacecraft3
[U] STATUS Orbiting Earth
RPOS 5751919.43 3197208.99 -1534320.11
RVEL 3941.948 -6451.150 1364.056
AROT -80.67 -32.91 98.49
VROT -0.07 -0.00 -0.00[/U]
PRPLEVEL 0:0.849
DOCKINFO 0:0,TM-23 3:0,Cosmonaut1
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
SEQ 0 -2 0.318200
SEQ 1 -2 0.151500
SEQ 2 -2 0.000700
END
We want Mir_VI to replace the default Mir, and now we must take a few steps. Ready?
Step 1) Copy Mir_VI into Mission 2-ISS to Mir somewhere between BEGIN_SHIPS and END_SHIPS, but not between another ship and it's END line. If we save hit save right now, we would have two Mir upon loading this scenario in Orbiter, that is if would crash. Let's fix that.
Step 2) Take aim at the following line in Mir_VI:
Code:
DOCKINFO 0:0,TM-23 3:0,Cosmonaut1
Then delete it.
Now we have two Mirs, one default and one Thorton. If we saved this scenario right now, we would see in Orbiter that the two Mirs are in completely different orbits. Let change that too. Remember the underlining from before? I'll show it again:
Code:
Mir:Mir
[U] STATUS Orbiting Earth
RPOS -2351755.31 -379917.64 -6234978.51
RVEL 7235.564 -160.954 -2708.618
AROT 1.60 -46.80 88.82[/U]
IDS 0:540 100 1:542 100 2:544 100
XPDR 482
END
Code:
Mir_VI:spacecraft\spacecraft3
[U] STATUS Orbiting Earth
RPOS 5751919.43 3197208.99 -1534320.11
RVEL 3941.948 -6451.150 1364.056
AROT -80.67 -32.91 98.49
VROT -0.07 -0.00 -0.00[/U]
PRPLEVEL 0:0.849
NAVFREQ 0 0
RCS 1
CTRL_SURFACE 1
CONFIGURATION 1
CURRENT_PAYLOAD 0
SEQ 0 -2 0.318200
SEQ 1 -2 0.151500
SEQ 2 -2 0.000700
END
The underlining is the part that tells the ship where it is, in what orientation, relative velocity etc. The STATUS line will also say what planet the vessel is orbiting, or if it it is landed on a planet. Since we want Mir_VI to be in the same orbit as default Mir, we do step 3.
Step 3) Copy from default Mir's STATUS line down to the one that says VROT, and paste it over Mir_VI's corresponding lines. Now we have Mir_VI right where default Mir is, and thus the next step is:
Step 4) Delete default Mir from the scenario. We don't need it anymore, having replaced it with Mir_VI. Now we arrive at the penultimate step.
Step 5) Save the scenario file as "Mission 2- ISS to Thorton's Mir", or whatever you fancy. I wouldn't want you to overwrite the one default one, but you can overwrite it if you wish.
Step 6) Load the scenario, hope that neither of us missed something important, and fly to your new Mir. Good luck!