Administration Password

Nothing short of reloading the operating system may be the solution since you are limited to space on hard drive toinstall a second copy.
The other option would be to consider paurchasing software to recover the password

See the following
1)www.mirider.com/ntaccess
2)www.annoyances.org/exec/forum/win2000/n1018917192

If the system is 95/98, just hit escape ate the password prompt and delete the PWL files in the Windows directory.

If its Windows 2000, now it gets tricky. You will need software.

Here is a good place to start:
http://is-it-true.org/nt/atips/atips262.shtml

It gives an overview of the process and links to software (most charge money).

My disk that I use (successfully on W2K Pro and Adv Srvr) can be found at:
home.eunet.no/~pnordahl/ntpasswd

You can change the local passwords only and it may not work in an Active Directory Services network.

Alternatively, perform an Internet search using "linux, windows, password, change, boot, disk".

G'luck - Bill