Can you ellaborate?
Boot off the Snow Leopard DVD and chose Reset Password in the Utilities menu.
That's what I was going to suggest but wanted to be sure of the problem first......
PowerMac's have the PPC cpu and will not boot Snow Leopard. I'm not sure that you can reset the password with the Leopard DVD.
Well spotted, perhaps it was just a typo from Eric though, as Delve stated 10.5 which is Leopard.
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