Bios pword on Inspiron 1721?

So a friend and I spent a good 3 hours trying to figure out his Dell's BIOS pword so we can change the boot order to install Windows 7. We found a few good things on google such as taking out the CMOS battery to running a debug script in CMD. Nothing we did worked so I come to you guys. It's an Inspiron 1721 Laptop with Vista and we want to remove / find out the bios pword. Dell customer service want's like $60 since it's out of warrenty and holding the power on down for 5 minutes didn't help either. (We haven't actually tried removing the CMOS battery because he didn't want to go in that deep.) What else could you guys recommend?