genuine copy of Windows XP

[robina_80]

hi guys,
how do you know if you have a legal genuine copy of windows xp do you go START, ACCESSORIES, SYSTEM TOOLS and ACTIVATE WINDOWS and if it says "windows is already activated" does that mean its a legal genuine copy.
And also if you have a fake version you cant download and install windows xp service pack, but if you got a legal genuine copy you can cant you.

 

[TheChef]

Does your computer case have a genuine sticker from microsoft witht the XP code on it?

 

[Blue]

you have the CD right? If it's burnt you'll know it. If you buy a computer it comes with the OS... Look at the cd.

 

[Deathrow]

You can still download service packs with both an original retail disk and a copied illegal disk.