eyespi,
Something I found with my XP (Home version)...When I set up my computer, I didn't have it connected to the internet. I wanted to provide an administrator password before connecting. So, when I had the option to activate XP, I skipped it (I wasn't connected yet). After I connected to the internet, I never had the option to activate. I went through a lot of checking and finally found that when I first connected to the internet, XP AUTOMATICALLY activated itself! Without telling me.
So, if you follow rjkrash's suggestion about finding it in system tools....don't be suprised if you get the response that you are already activated.
-Bill