Hello shoulders13, welcome to PCHF.
Most e-mail companies will remove e-mail accounts if unused for an extended/fixed period of time. As far as I can tell, dellnet.com expired 2005, and was taken over my MSN (which means your e-mail address would have changed also): (
DellNet By MSN). If you remember your account details then try to logon by clicking on
Signin on the top right of that page, or contact Microsoft directly, but I really don't like your odds.
EDIT: Marked as Answered.