How to become user SYSTEM in Windows XP

Ok, to start, go to Start>Run.
Type cmd.exe and hit ok.
Now in the command prompt that appeared, type at and hit enter. It should say "There are no entries in the list", but if it comes up with some stuff, we should be fine.
Now type this into the command prompt:

at XX:XX /interactive "cmd.exe"

Where XX:XX is approximately 1 minute from the current time in 24 hour format.
When the system clock reaches that time, a new command prompt will open.
Now type tasklist in the command prompt and hit enter. A list of all the processes running on your computer will be displayed.
Search through this list for explorer.exe. Once located, remember the PID number next to it.
Now enter this into the command prompt:

tskill XXXX

Where XXXX is the PID number of explorer.exe.
Finally type explorer.exe into the command prompt.
When you press the start button again, your username should be changed to SYSTEM, and you will have full administrative rights over the entire computer.
You can kill processes that Windows normally locks, change all the user account names and passwords, delete Windows files, pretty much anything that you wouldn't normally be able to do.

Thanks for looking and I hope you find this informative and useful.