Hi try4job2 and welcome to SCF Community.
Related to your question, as I know list for unwanted program exclusions is blank by default.
All of these:
vnchooks.dll
vncviewer.exe
winvnc.exe
TightVNC
Reg-TightVNC
belong to TightVNC - free remote control software package:
http://www.tightvnc.com/If you (and maybe forget) or somebody else doesn't add this program to exclusion, there is additional possibility of Hacker attack (access)...
However,
my advice is to remove all of them from excluded list and scan your PC with at least two Online Scanners, maybe BitDefender and Panda (anyway, don't use McAfee, since you already have them installed):
http://scforum.info/index.php/topic,734.0.htmlPlease provide us results.
cya later,
S.