I was trying to install wyre mash, but I have Morrowind in the Steam directory so I changed the shortcut to the steam morrowind directory but it still fails to launch. Here is the bugdump that I got by following this tutorial:
http://wryemusings.com/Wrye%20Mash.html#IfMashWontStart

c:\Program Files (x86)\Steam\steamapps\common\morrowind\Mopy>c:\python27\python.exe mash.py 0Traceback (most recent call last):  File "mash.py", line 7, in     import masher  File "c:\Program Files (x86)\Steam\steamapps\common\morrowind\Mopy\masher.py", line 26, in     import wxImportError: No module named wx

You haven't installed all the required packages that are detailed in the readme.

Or, to save you the trouble you can use http://www.fliggerty.com/phpBB3/viewtopic.php?f=53&t=3646.

Thanks.