There are two different passwords that can be set in the bios. 1. Standard Cmos password which can be reset by a jumper or removing the cmos battery. 2. Administrator password, and as far as I know, no way to crack that one. Not too sure what kind of restrictions that Vista has placed on the Cmos though (if any, shouldnt be.) Try taking the battery out and letting it sit for about 10 - 15 minutes before putting it back in...

good luck!