I haven't been able to use Tremulous, because I have had a problem with video drivers. Before I installed the latest version, it wasnt able to find the Glide driver. My new video card is not a 3DFX card, and is not Glide enabled. Now, Tremulous opens a fullscreen window and is closed by Windows. I am running Windows XP with 1GB RAM, a P4 516 (2.93GHz), and a GeForce FX 5500.