I Make Custom Build for This Game, about DOS no idea, but on Windows 2000 and XP x64, Carmageddon Runs Pretty over TCP/IP with High Resolution Mode. I Have 2 Cards 3Dfx V2, and works Fine in Glide Carma 2 only. This Build Tested on Gigabit Adapters PCI-E and WLAN B-G-N adapters!