Hello chicopee,
The problem was created by McAfee in June 2006 (with a patch released by them in September 2006 to correct it) - you are
far from being the only person affected by this.
Please see my post in this Topic, for back-history and links containing pertinent information:
Help me remove ad-aware se personal (temporarily), need removal toolOnce you have installed all of the McAfee products that you want and have downloaded all up-dates and patches, you should be able to re-install Ad-Aware SE again.
Regards,
Spike