IIS (win XP Pro) & ASP.NET - No Go

Hi all, i have had asp.net working fine for many months and now i must have upset something (not sure what) and now my default web server (IIS) wont even load and display a plain html page correctly, its gets half way loaded and stops (if i go view source while its loading its missing the head html tags). When trying to use previos asp.net items that used to work they now don't and say cant find the scripts path (which is there i manually checked). i tried re-installing IIS, ASP.NET (command prompt), .Net Framework, VS.Net and nothing works.

Any suggestions on how to get my IIS working again and processing ASP.NET stuff would be much appreciated.

I have another computer (similar specs) and they are set up the same and the other one works fine with all the asp.net stuff.

Try searching this forum for help on this. There is a command-line utility that will re-register the net stuff in IIS but I don't recall the specifics.