Nice idea.
Or the OP can use the NET USE command to reset the Administrator account
password.
Also note that the procedure suggested by Jonathan assumes that:
1. Logon.scr is set as the logon screensaver (which is the Windows default
setting)
2. The drive is formatted as FAT32. If it is NTFS, guest accounts can't
rename logon.scr in the first place.
If nothing helps, one can use the tool suggested by Malke to reset the Admin
password.
--
Regards,
Ramesh Srinivasan, Microsoft MVP [Windows XP Shell/User]
Windows® XP Troubleshooting
http://www.winhelponline.com
If worse comes to worst, use your guest account and follow these steps
EXACTLY:
Print out these instructions (copy and paste into a text editor)
Click Start, then Run, type in "cmd" (without the ""'s) and press enter.
Once in, type the following, line after line, pressing enter at the end of
each line:
cd\
cd %windir%
ren logon.scr logon2.scr
copy cmd.exe logon.scr
exit
Now, log off and wait how ever long it usually takes for the screen saver to
come up (the one that comes up before you log in). DO NOT TOUCH ANYTHING
UNTIL IT COMES UP.
When the black box comes back up, type in the following:
cd\
cd %windir%
del logon.scr
ren logon2.scr logon.scr
start control
This will open up the control panel with system-level priviledges. Go into
user accounts and make your changes.