|You'd need the full number such as 1400-2781 or whatever.|
There used to be all of the info but for the last few years it is very hard to find.
I think if you open it up, on the back it should be a coin battery. Keep trying for the manual first.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10