Dell won't remember Login

I have been able to auto login forever. That is until I used Nuts and Bolts Disk Tune, Reorder + Unfragment, manually deleted all my cookies and history files a few days ago. I don't know what I've changed and it dosen't effect any other login I use. Just Dell's. I can login manualy each time without any problems and I click save password each time and I never use logout but each time I reenter the Dell Support I have to login. I have thought about re-registering but how do I delete my current name and password because I don't want to use another and I don't want the error message that someone else already is using that login. I know it's not a big deal, but not knowing how to correct this is bothering me. I have looked into the Control Panel, Password, but I didn't assign a user and I didn't assign a Windows Password. But I didn't need it before?
Thanks in advance for any advice.

Dimension XPS B800r (March/2000)
256MB RDRAM
64MB DDR NVIDIA geFORCE Plus AGP Graphics Card
32.4 GB Ultra ATA Hard Drive
12X Max Vairable DVD ROM Drive
250MB Iomega Zip (internal)
3.5" Floopy Drive
HP DeskJet 952C (USB)
HP ScanJet 5200 Cxi (USB)
Windows 98se

Message Edited on 04/15/01 11:38AM by jim_b28