Extract "Diablo II Lord of Destruction (v1.13c).7z" using winrar or 7-zip. (www.7-zip.org, it's free)
Run "diablo 2.exe"
Play (from anywhere on your PC)
If the game is having graphical problems/errors. such as: distortion, miscolored areas of the screen, etc.
then run it in compatibility. mark ALL of the compatibility options, and run in compatibility
for Windows XP SP 2. then the game will work PERFECTLY, without any glitches, distortions, etc.
(BE SURE TO MARK EVERY BOX IN THE COMPATIBILITY MODE OPTION)
IF THE GAME IS STILL DISTORTED AFTER DOING ALL OF THEE ABOVE, then try running in compatibility for earlier versions of windows (95, 98, 2000/me, ETC)
THE ABOVE ERROR ONLY HAPPENS ON HIGH-END PC'S (Usually Windows 7 and vista)
CAN BE PLAYED VIA LAN OR OVER HAMACHI!!!!!!
Credit to FuCtUpPuNk #tpb