YESSSSSS DISABLING POP-UP STOPPER WORKED.
I am using Windows XP with Office 2003.
Ad-Watch was running when i got the error.
when i closed down Ad-Watched everything worked great.
thanks a bunch wackyguy for posting!!!
I also had the problem of Installing MSN 6 because of 1603 error. I figured out that a pop up stopper program of mine was causing this.. If you have ad-aware 6 and have ad-watch activated, right click the icon in the taskbar and chose terminate, then install..
If this helped anyone plz tell me, I want to know if this was actually causing it. Thanks!