Trojans Adware HELP

I have McAfee Security Center and it has been picking up this generic pup that I can't remove fully. At first I didn't think anything of it until suddenly the other day Security Alert Center messages started popping up every 25 minutes stating there was a sinowal trojan on the computer being blocked and asking if I want to block this suspicious software. Being suspicious myself, before I clicked Enable Protection, I wanted to look up this sinowal on the internet. The google load up screen was replaced by a warning saying I'm not protected, and it gave me the option to protect myself or proceed without. I reloaded the page and it went back to the normal google homepage. I then knew something was up and searched for a good virus scan. I found kaspersky free scan and used it. It detected 5 trojans (C:\WINDOWS\system32 and C:\RECYCLER), 1 adware (C:\RECYCLER), and 4 backdoors (C:\WINDOWS\system32). Also a couple of the trojans are in the Svchost.exe file. All I have is the free McAfee right now and I'm afraid to purchase anything better online for fear of a third party. Hopefully there is an easy solution to my predicament although I am not very computer savvy. Please send what advice you can to help and it would be much appreciated. Thank you for your time.