Well, for those with XP, see my note several places up.
I did not put core.aawdef in the search line because it came up when I put the rest of the address in the search line.
I deleted the core.aawdef, then couldn't start the scan... waited a bit, like someone else suggested, now it's running and I think everything is okay. I have adaware 2008. This is the first time a forum answered my problem so I'm satisfied that what was suggested by lavasoft and what I did worked. Adios!