what is the safest free computer downloads to use for fixing registry issues & problems with Adware & spyware?

help ! please, somehow my husband picked up 2 really bad security issues, from face book & his E- Mail. 1) was a Rogue security tool and the 2nd. was a adware program called Target Savers. between both of them and what they have caused, my computer is a mess. over 5 days and sleepless nights so now am I thank you for whatever help u can offer.

Try : spyware doctor ( http://pack.google.com has free version)
Superantispyware (www.superantispyware.com )
mawarebytes anti-malware (http://www.malwarebytes.org )
Also, for security tool you will have to disable it prior you can install some of the removers. Here you can find instructions how to do so : http://getridofspyware.org/how-to-remove-security-tool.html

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