ASPX / IIS Permissions problem

I'm setting up IIS 5.1 on XP Pro SP2. I have a virtual directory with a .HTM and 2 .ASPX files. IIS can see all 3 files from its explorer and it can display the the .HTM file in its browser with no problem but I get a file access problem ...

Server cannot access application directory 'C:\Documents and Settings\peter\My Documents\SW\WebProg\SW\HelloWorld\HelloWorldVirtDir\'. The directory does not exist or is not accessible because of security settings.

... on the two ASPX files.

If I put all 3 files in Inetpub\wwwroot there's no problem displaying any of them.

I set the permissions for my virtual directory path to be the same as the InetPub\wwwroot for IUSR_<machinename> and IWAM_<machinename> but it didn't help. So I set my whole C: drive to have those permission for those two accounts, but it still didn't help!

Suggestions? Thanks in advance!

you also need to set the permissions of those folders for the ASPNET account.