Followup:

I contacted the creator of PurgeIE. He has received another inquiry regarding this keylogger alert that I mentioned in my preceding post. He has double-checked the executables in the download archive files and they seem OK. This may very well be false positive, but we'll see.

Also, I have contacted PestPatrol's help desk and should get an answer within the next 24 hours.

I thought that a forum like this would be a good place to get help in tracking this type of thing down.

Thanks to all who can help.