Also need to know the video card.
Right click on the desktop, select "Properties", then click the "Settings" tab. Under the picture of the monitor, it will say something like "Plug and Play Monitor on NVIDIA GeForce 9600 GT"... that will at least tell us the model of the video card.
Oh, also download and install any updates for the game. I'll get a location on that in a minute.
Nevermind that, seems there are no patches for the game except a compatibility patch for Windows Vista.