http://www.pctools.com/spyware-doctor-antivirus/ and this:
http://www.gdata-software.com/online-shop/anti-virus-produkte/shop/46-private-users/964-g-data-internetsecurity-2010.html
And this is what its supposed to mean ?
A) spammer
B) curios
C) naive
The correct answer is ???
B) Curios ? Try google 
I have no idea how effective these products are, have read quite a few adverse comments about SpywareDoctor being a system hog, and that’s all I know.
Gdata internet security is effective and it was ranked #1 in pcworld top security suites. http://www.pcworld.com/reviews/product/61695/review/internet_security_2010.html. I wouldn’t recommend pctools.
Spyware Doctor with AntiVirus 6 http://www.pcmag.com/article2/0,2817,2326198,00.asp
and just so you now it is a symantec company
http://www.symantec.com/about/news/release/article.jsp?prid=20080818_02