you fixed the title!!!good job

what the heck does that mean..
anyways i think you have forgotten your password and you dont have the correct disk....heres what you should do...
reboot the machine in single user mode. hold down command(the key with apple) and s..it would and should definitely work for you to go ahead...this would get you in text only mode.
at the command prompt, write 'mount -uw' without the '. then write 'Systemstarter' this would start netinfomanager. a bunch of stuff wd fly be. at last you wd see a message 'system started'. hit return, you wd get the command prompt again.
if you know the user name write 'passwd user--' user wd be the short user name of your account.now you will be asked for password , type it , u wont be able to see what u r typing, so just hit return, i think it wd ask twice. anyways after this just write 'reboot'. u r set.
if you have forgotten the short username too, then at the prompt write 'niutil -list . /users' and hit return, it wd tell u all hte accounts.
cheers