VS .NET 2002 Web Projects require security tweak on W2K3
Those of you trying to develop Web Projects with Windows 2003 may run into a small security problem. The error you get is “Unable to create Web project. (blah blah) The two need to map to the same server location. HTTP error 404.”
There is a Microsoft KB article here that explains the issue: http://support.microsoft.com/?kbid=327283
Basically, what's happening is that VS .NET 2002 is trying to download a .tmp file. IIS6 blocks .tmp files as default, which I assume gives rise to the 404 error. There are two workarounds. One - upgrade to VS .NET 2003 (thanks MS). The other is explained in the KB article and involves mapping the .tmp file to a MIME type so that IIS6 will serve the files properly.