Adaware Threats Found During Search

I ran a system scan with Norton 2004 and it came up with the following
threats.
msbb.exe- Adaware.180Search
mssbhook.dll- Adaware.Ncase
preInsTT.exe- Adaware.Binet (found 4 of these)
twaintec.dll- Adaware.Binet (found 4 of these also)

I went to delete them and the delete came up as failed. I went to the
Symentac site to see how to get rid of them and it is a tad beyond my scope
of understanding how to delete them. Any help would be greatly appreciated
on this matter. Thanks.