A message appearing"you may be

Try this program:http://www.softpedia.com/get/Tweak/Unins... and disable automatic updates: START-> CONTROL PANEL-> AUTOMATIC UPDATES -> CHOOSE THE OPTION -> Turn off automatic updates <- ;-) ....

Just search google for "softpedia removeWGA", download the removeWGA freeware, open it and? follow the steps....problem solved...

Windows Genuine Advantage Notifications for Windows XP notifies you if a copy of Windows XP is not genuine. The notification messages only appear on computers that have failed the WGA validation process and that are running a copy of Windows XP that is not genuine. If you are running a validated, genuine copy of Windows XP, you will not receive notification messages.
Removing WGA Via The Command Line Restart your PC and boot into Safe Mode, usually by pressing F8 whilst your computer boots. Once your PC has booted open a command prompt by clicking Start then Run and typing cmd into the box before clicking OK.
Change directory to your System32 folder with the following command:
cd \windows\system32
Next you're going to need to copy the following lines to the clipboard, in order to paste them into the command prompt quickly. This is necessary to kill the WgaTray.exe process and delete the file before Windows has a chance to launch it again:
taskkill -IM wgatray.exe
del wgatray.exe
del wgalogon.old
If all the commands executed correctly you should have killed and deleted WgaTray.exe as well as WgaLogon.dll. You might also want to have a look for any WGA-related files (WgaTray.exe, WgaLogon.dll, WgaSetup.exe etc...) in \Windows\System32\dllcache and delete them, just in case.
Restart your PC to see if the changes have taken effect, if the WGA notifications are still there then you'll want to continue reading this next bit, otherwise you're done.