Xp Help..

I keep getting an error message when trying to install xp service packs

i need the lastest service pack so i can download activesync for my phone

the message reads as follows

The expected versions of the product was not found on your syste,/

What does this mean, and how the hell do i fix it

it sounds like its a patch do u have the software or r u trying to download it? or its a patch for a version u dont have

its because i dont have a genuine product key i guess

i forgot i reformatted once

nvm

Heres a tech article related to it:
http://support.microsoft.com/kb/837826

ok wtf i have a genuine key and it still wont let me update to sp2

and i need to…lol