Deleting file on mapped users share

I have Full Control Administrative rights on my entire NT 4.0 network. When I map a network drive to \\computername\c$ I can see the contents of that users drive. I can delete most files, but there is a game (same.exe) that I cannot delete, I get the message “access is denied” I cannot view permissions on the file either. Any Ideas??
Also, is this the best way to “snoop” for files on users computers or is there a better way through NT to accomplish this?