Find the serial no from the computer

I lose the original box of SQL server 2000 eng. How can I find the serial
no. from the Server which installed SQL server 2000 before. Thanks much!!Run 'REGEDIT' from Windows Start--> Run.
Traverse the following chain:
"HKEY_LOCAL_MACHINE
SOFTWARE
Microsoft
Microsoft SQL Server
80
Registration"
The "Registration" entry has the product ID. You can also
get the CD-key from here.
HTH. Ryan
"Eco" <eco@.hotmail.com> wrote in message
news:epG6QqGgGHA.2416@.TK2MSFTNGP03.phx.gbl...
>I lose the original box of SQL server 2000 eng. How can I find the serial
> no. from the Server which installed SQL server 2000 before. Thanks much!!
>