Login opens System32 Folder Window

I am currently setting up a new computer and have gotten into a situation that when I log into my administrator account, a window for c:\windows\system32 file folder is opened on the desktop. I can close the folder and log out and power down the computer but the folder continues to be opened each time this account is logged into. How can I prevent this window from being opened?

Operating System: Windows XP Professional, Service Pack 1