You can Reset the Password by
pulling the CMOS Battery for 10min.,then resetting the battery and rebooting should clear the Password.
Most MFGer's have a backdoor Password that might get you in as well,but you will need to Post your BIOS info here.
Some of the Mfger's that have Backdoor Passwords are:
Award,AMI,PHOENIX and many misc.
You can also use Applications to either retrieve or kill passwords such as this app:
KILLCMOS
http://www.utilitygeek.com/details.php?fileid=82
The
NEW MOBO will not have a Password until you set it up upon installation of the MOBO.
Hope this helps...
Cactus