How to "Un" Disable a Disabled Enhanced USB Controller

[saberhawk]

I own a Sony VAIO desktop VGC-VA10G with Windows XP Media Center Edition 2005.
While following some troubleshooting tips to fix a downloading problem with my iPod touch, I
disabled the USB Enhanced Host Controller via device manager (despite the warning).  Now, all
three USB ports are disabled and I have no keyboard or mouse control of the computer.  Both keyboard and mouse are wireless and there is no other inputs into the CPU.  Any advice greatly appreciated. 

[street1 (RIP)]

You are going to need to reset your BIOS to defaults by removing
and reinstalling the CMOS battery.

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