ok so after installing Intel i830/i845/i855/i865 (Windows 98/ME) i've had the screen resolution reset on my prebuilt tower. fine, i'll just roll it back. except the Roll Back Driver button is greyed out, and when i uninstalled it Windows put a driver back on its own, i keep getting this:

USB Audio Device Properties
Device status:
This device cannot start. (Code 10)
{Operation Failed}
The requested operation was unsuccessful.
Ive heard of DDU, but people say its dangerous and other people say its the only correct way... i just want to go back to the driver that worked yesterday. Whats teh right sequence?? thx in advance!!