If the chosen video mode is not working correctly, contact your video card manufacturer for their latest drivers.

Diablo II supports Glide™ and Direct 3D™ compatible video cards with at least 8MB of video RAM. Direct 3D™ requires 64 MB of system RAM.
The screen area for Diablo II is set to 640x480. When on Battle.net through Diablo II the screen area is set to 800x600.