This google http://www.google.com/search?hl=en&q=outscan.dll on the first link is the fix I've used but the next post is someone asking if anyone fixed it.
I used to have Mcafee on my computer, but now use Norton. But now, every time I try to open Outlook 2003 I get this message. "The add-in "c:\progra~1\mcafee.com\vso\outscan.dll" could not be loaded or installed"
It is annoying, and all I have to do is click "OK" and I move on to my email. How can I get rid of this annoying error? Thanks.