server aspx file on new setup windows server 2003

if get the 404 error says page can not be found, check these two things:
1.if IIS 6.0 allow ASP.NET 2.0 ISAPI in application extension service;
2.Give NETWORK SERVICE account default permision on the folder:
c:\windows\microsoft.NET\framework\2.0\Temperary Files

that's it.