Some motherboards have a jumper that can be set to clear and reset the bios. Just taking the battery out for a few minutes will do it also. Before you try anything, write down any special settings you may have, so you can reset em later. And have a look here, this tutorial explains it better:
http://www.pchelpforum.com/tutorials...-password.html
Edit: Theres alot of good information in the tutorials section of the forum. Theres also a search button on the toolbar at the top of each forum section. Just type in what youre having trouble with, and odds are pretty good your answer may already be there, and you wont have to wait for a reply. Browse around the different forum sections, alot of good reading here.