--UPDATE--
Testing positions have been filled. When all beta testers return their findings I will release the application. In the meantime, I'll tell you what it does.
The app is pretty much a UI for your setup.ini file. It allows a degree of control over settings such as light-mapping, shaders, and other commonly modified values. An example would be light map quality, and texture size. These are controlled using a track bar and a 'nud'.
I am also planning to expand from its original purpose, as I have a few more ideas.
Testers are:
1) TiTaniUm (Win7 HP, 64bit, 4GB)

2) knxrb (Win7 U, 32/64bit, 4GB)

3) Crysis (WinXP, 32bit, 1GB) (Win7, 64bit, 4GB)
4) Dark Frager (Win7 HP, 64bit, 4GB)

5) The Zoq2 (WinVista, 32bit, 2GB)
Tested So-Far:

Windows XP SP2 DotNet V2.0 installed - No Errors

Windows 7 32bit U - No Errors

Windows 7 64bit HP DotNet V4.0 (Pre-installed) - No Errors
Best,
JRH
C++ is labourless... if your name starts with 'L' and ends with 'ee'.