I was running on Windows 98 before upgrading to Windows XP Professional. While still running Windows 98, I tried installing the .NET SDK Framework. It basically installed all the documentation and samples. I then upgraded to Windows XP Professional. I tried reinstalling the .NET Framework but got Windows installer errors. I then uninstalled XP and resorted back to Windows 98. From there I removed the .Net Framework through Add/Remove Programs. I then installed XP Professional again. I am still getting an error while trying to install the .NET Framework. Wondering if anyone has had the same problem or knows solution.