the boot/emergency CD will give you full admin rights in a (DOS like) repair console without any log in;
in this mode you are able to replace the admin password without knowing the old one;
syntax passwd {account} [{new password}]
example passwd administrator test
the boot/emergency CD can be created on any other PC, but during preparing you have to keep ready the OS setup CD from the patient PC;
Greetings from
Duracell
edit: it's me again;

if you want to create the boot/emergency CD by using a slipstreamed OS setup CD, you have to add manually the SP info file (e.g. "WIN51IP.SP1") from the root of your OS setup CD to the root of the boot/emergency CD; this important detail isn't mentioned in the helpfile nor the manual;