How do you unlock BIOS password?

Good Morning,
Over the weekend, I went to turn my computer on and it would not boot. It would begin it's a POST, but then it would stop saying that the BIOS password was incorrect. I honestly do not think I had changed anything. But regardless, how do I either bypass the password, or change it so that the computer will continue to boot?
I have a Dell Dimension 4300, with Windows XP. I am unsure of any other specs on it since I am unable to get anywhere with the boot up.
Thank you in advance for your help.
