Just a quick one today.
Tried playing an old favorite Diablo 2 on Windows 7 today and found it has issues, mainly screwing up the colours on the game.
The fix is simple, all it involves is making sure explorer is stopped while the game is being played.
1) Create a batch file in the diablo 2 folder
2) Edit the batch file to match the following:
taskkill /f /im explorer.exe
3) Save and exit.
4) Change any shortcuts to point to this file instead of game.exe
Enjoy the classic game.