writing files

I need to be able to save files to a folder on the site I am working on. I have the permision set to allow read, write, no execution. I get an error saying I have to grant ASP.Net Write permisions on that folder/file.

I am creating files on the fly. Always a new file. Windows 2000 Server. How do I setup write permisions for ASP.NET?

I seem to recall all this was simple for asp I just set write!!!!

Thanks

Have you given the permissions to the ASP.Net account ?

Thats my question how do I do this? I assume I simply use security from the folders proprtety menu. But, what about in XP the security is diffrent.