ok ive haf backtrack 5 for alittle bit now and im having a major issue, i forgot my password and its not the default toor password, is there any way to reset my backtrack 5 to defaults (sort of like on windows f10 to reset to factory defaults) and if not how can i change/recover it?

If you need to know, i run gnome 64 bit(yes im sure i can run a 64 bit) and i have an HP computer (terrabyte).