Dell and Dr. Dos Chipset Screwup

Hi All;

I installed Win Xp on a SATA Drive and went to Dell to get the appropriate drivers to install the Network/Ethernet Drivers for a Dell Dimension E/310 Desktop. After gaining access to the Internet, I went in to get the drivers for the rest of the PCI Comm drivers and a message came up indicating that I needed to D/L and Install the New Chipset Drivers from their site and that it was marked as a "Urgent". I D/Led it and Installed it. After the install the system asked for a re-boot.

Now The Fun begins.. The system now boots up with Dr. Dos and locks up at the prompt and does not accept any Keystrokes from the Keyboard. :cry

Is there a way I can get back to MS DOS and get away from the Dr. Dos Flub-Up? I can get to the Cmos/Bios. I am asking perhaps that if I reset the BIOS/CMOS back to Default, Should that put me back to MS DOS so I can get back to XP or is there another route that I need to go?

Any Help is greatly Appreciated...