Changing Permissions on IIS folders in XP

I usualy develop web apps on a Windows 2000 machine where I can right click on a folder in my wwwroot directory and change the read write permissions for any folder inside the root.

Now I am on an XP Pro machine and need to set it so that the ASPNET has read read write permissions for a couple of sub directories but right clicking on an XP folder doesn't give me the same options as it does in 2000. I have looked through the Help file and can not find the answer.

Can some one tell me what I am missing.

I found this, which says:

You can also access Folder Options, View Tab, uncheck last box (Use Simple File Sharing)

I love that checkbox :)