I installed Diablo II and LoD, and it wouldn't run because of compatibility issues. the desktop, and when set to Windows 98 it wouldn't launch at all. Make sure you ran all updates from windows update before anything else.
In order to run Diablo 2 on my windows 7 PC, I did the following (and this Disable Desktop composition; Run this program as an administrator Think I had issues using the actual CDs because you couldn't patch them.
UPDATE * To get diablo 2 to work in 3d, follow the same instructions, and connect through battlenet from the.