It must be a trial version. Spyware Doctor is not free. Though it's good I know there are better spyware removal programs that are as effective considering the price
I would recommend that you explore these too:
http://www.ewido.net - AVG(Ewido) anti trojan.
http://www.lavasoft.com - Ad-Aware SE Personal anti adware
http://www.safer-networking.org... - Spybot Search and Destroy anti spyware
Don't ingnore Microsoft Defender either.
In my experience there is not one spyware removal program that removes all spyware. You will likely need two or three different ones.
