In Mac OS X, how do I change my admin password if I don't know it?

They have to be the same is version for the machine. For example a set of CDs for a MacBook won’t work in a mac. If you get the media and insert disc 1, restart and hold the c key. When the welcome screen comes up select the HD and then select utilities at the top. Password change is in there :-)

USe your installation media. There is a utility to change it there,

If you can get a hold of media for any machine, like a generic Leo DVD, that will work. (Sorry I didn’t read your whole post).

Otherwise you’ll have to get replacement media for the machine you have, which can be a PITA. It’ll cost you too if you can’t find identical media that someone else has.

Is there an Apple Store near you. The “Geniuses” there will do it for you.

I have Tiger running but I don’t have the discs. I have the Leopard DIscs for a Macbook pro. Might have some old panther discs somewhere- they are generic I think. Neither of those will work, right? I guess I can just do a fresh install- does that have to be the discs that came with the machine?