Granting write access to a file

I have selected the Security tab, account, advance and find now tabs in user group pane, "Machine Name/ ASP.NET", and selected Add and the permission of choice. I restarted VS 2003 and asp.net, but it still does not work. Please tell me how to resolve this, I've already tried other user accounts but to no avail..

re: Granting write access to a file

Have you tried changing your folder permissions? Please provide more info. Thanks.