Lost my root password

Over the weekend I was helping my brother install SuSE Linux 8.0 and advised him to change the root password to something of his own choosing. Well, ...that was it, the password he says he entered does not fit and the old one I set does not fit either. Now I'm stuck, as I can not remember how to start the system in an anonymous shell so that I can reset everything. Does anyone on this list remember to how to get out of this problem? -William