again, not to steal a thread, but it's not possible to bypass a bios password. If the password is set, your set with it. No CD in the world will get you around a Bios password. That being said, on 98, you can just press esc and you log onto the machine. Passwords on 98 were and are a joke. There is no point. It's a rule of physical access. if you can gain access to a physical component of the machine, then it's too late...
As to the low level passwords, they protect beyond a simple physical access when the machine boots. after that, on 98, there isn't much to do. The above posts have already cleared how to remove the password, so I think that should finish that thought...
on the other OS's it's a bit more complicated, but aside from not having a login on most machine in the world, people will lock their doors and close thier blinds, but don't care about the computer in the office after they set up the firewall and installed the AV and SW tools. and too be honest, that is really all they need. Once you are actually on the machine, even with a password, you are vulnerable. That is just the way it works...
