Installation :: Compatability With WinXP SP3 And Visual Studio 2003?

Ive got to go back to an old web application project done in VS 2003. I know 2005 will convert it, but I've never had a lot of success with it, so I'd rather just stay in 2003 for this minor change. Anyway, my original system that I did this work on has changed too much and IIS isn't working anymore, so I decided to use an older laptop that I had just recently refreshed with XP Pro SP3. After installing IIS (and the front page extensions) then installing VS 2003, IIS refuses to work right. Any attempt to access it yields a security error. I havent even loaded my project on this machine yet, so this is a straight IIS problem.

Specifically, any access to localhost results in a login dialog being displayed for which no valid login will work. Once I cancel, I get a 402.1 error.

HTTP 401.2 - Unauthorized: Logon failed due to server configuration Internet Information Services Here are a few things I've tried.

I ran asp_regiis -i from the 1.1 and 2.0 framework directories.

Reset iis a few times with iisreset

Altered the security settings on the inetpub directory. previously some users did not have any permissions, and the ASPNET and IUSR accounts were not added. I added them and gave any user in the list Read/Execute permissions.

I know the error is very vague, but thats what makes it so annoying. I'm drawing blanks and the only thing I can think of is that SP3 just doesn't work with 2003 any longer. I'm building a VM with a brand new SP3 install to try again and another with SP2 as we speak to see if I have any better success.