Outlook 2003 attachment is not working

I have a system user containing complete usage of the home folder relating to the server in addition to, he is also a local administrator on his computer. The issue is actually whenever he works through outlook 2003 and also attempts to back up an attachment through clicking on "my documents" (is usually pointing to home folder relating file server) he receives an access denied.
The following mainly takes place within outlook 2003. So what is the problem in here?
