Had computer rebuilt after having viruses. reinstalled what i wanted to?

keep. Now i just have windows.plus clean stuff that we kept. Downloaded AVG virus protection ran a scan this evening and it found 2 trojan downloaders. which it could not clean what can i do ? Ist there trusted software to use to get rid of these for good? and how to remain protected. If so where can i SAFELY download from. Is download.com safe enough? would adaware serve my purpose?

Had computer rebuilt after having viruses. reinstalled what i wanted to?hp

Spyware, Adware, Trojans, Malware, Dialers, Popups:

http://www.lavasoftusa.com/software/adaw...

http://www.ewido.net/en/download/...

http://www.javacoolsoftware.com/spywareb...

http://www.download.com/Bazooka-Adware-a...

http://www.javacoolsoftware.com/sgdownlo...

http://www.safer-networking.org/

http://www.download.com/HijackThis/3000-...

http://www.emsisoft.com/en/software/down...

Online Scanners:

http://www.webroot.com/consumer/products...

http://www3.ca.com/securityadvisor/virus...

http://www.pandasoftware.com/products/ac...

http://www.bitdefender.com/scan8/ie.html

http://www.windowsecurity.com/trojanscan...

http://www.kaspersky.com/virusscanner

http://www.spywareguide.com/onlinescan.p...

http://housecall65.trendmicro.com/

Spyware, Adware, Trojans, Malware, Dialers, Popups List: