How to activate my AVAST PRO 8 FREE ? HELP!

Anyone can help me ?

Can you tell me what version you’re running and what OS?
Is it 8.1483, 1488 or 1489?

If you installed Avast 8 free, this bug has been experienced by myself and others after
doing a System Restore in Windows XP. The solution is to uninstall, reboot to Safemode and
run the cleanup utility aswclear. Then reboot back to normal mode and reinstall Avast.

Version 8.1489 is supposed to fix this. (I’ve read somewhere on this forum).
http://www.avast.com/uninstall-utility