Sfall for first Fallout doesn't support graphics modes anyway. Don't get confused, that's advice for Fallout 2 with completely different version of sfall mod. Try this: Make sure you have latest version of DirectX 9.0c installed: http://www.microsoft.com/en-us/download/details.aspx?id=8109# 1. Install clean Fallout 2. Apply any eventual patches 3. Download and install High-Resolution patch, even if you're planning to play with a default 640x480px resolution. There's fix for some graphics issues builded in Hi-Res patch, check the f1_res.ini file afterwards.