I was trying to help my dad install D3 on his computer but he kept getting the error that he needs a newer version of windows. He is running windows vista and has the latest updates. I read some of the "fixes" floating around the forums and none of them seemed to work. Is anything being down with this latest maintenance to fix this issue.
Be sure you are running service pack 2, I had to install that before it would let me play, it usually wont come to you as an automatic download, may have to get it from Microsoft. Right click "My Computer" for to "Properties" Should show which version you are running. GL!