This is my problem...like it started asking to activate windows...and so i did by the net..but it's like it doesnt save the info that has allready been activated cause after the next boot it asks again to be activated...i've got a phone key and now everytime i want to enter the pc i've got to put the key... what shall i do?

Is it a legit activation?

Yes...the net one it did by itself and the phone one i gave the number by phone and they gave me a number that i currently use...

I have something that could work if that doesn't want to go away...

i'll add u in msn cause that stuff may not be allowed to speak in here....

if you have a legally registered copy of windows than there should be no problems talking about it here.

It seems like the file that stores the registration infomration is corrupt. Try reinstalling Windows XP.