It's using Vista Business, but if that's going to cause too much of a headache, I'll create an XP partition.

The main issue is the graphics card, I'm thinking of adding a Radeon HD 3870. Anybody already using this card and are there any issues using MXO with it?

Cheers

Vista has some graphical issues with MxO, but to decrease them, do the following:

*Run latest DirectX (available from Microsoft)
*Install latest drivers / catalyst
*Disable all ingame shadows
*Save this file to your MxO directory (disables dynamic lighting, right click save as.)
*(since you have Vista Buisness) In the MxO Folder, rightclick->properties on launcher.exe, and matrix.exe.  Go to the Compatibility Tab, and select XP Compatibility, and Disable Desktop Composition (disables Aero while you play).

Should prety much cover it.