I don't think you read my comment. I know that Windows 3.x were not based on NT. They were DOS shell extensions essential that could run DOS, but not as well as OS/2. Windows 3.11 didn't sell hardly at all, but everyone mentions it like it did. It is a common mistake. Windows NT 3.1 was just something I forgot about. Windows 3.51 was the popular version. All this was before the internet as we knew it took off. People only had access to what was available in the book store or computer store, and online updates was usually for enterprise subscribers only.