Repeated Exposure to Win7 Anti-Spyware and Google Re-Direct Virus

Hi there,
So I had the google re-direct virus for a pretty long time. None of the solutions worked but i finially got a free trial to a program Hitman Pro or something like that. I noticed lately I will get theese random attacks of Win7 Anti-Spyware followed with the google re-direct virus. I will fully get rid of it and everything because I am used to it but it seems like I get re-infected every 2 weeks. I dont believe that it is 'ressurecting' in my PC but that it keeps coming in through my browser. I am not looking at Porn or visiting warez sites or anything so i need to pinpoint how I keep getting it.

I am not running any anti-virus due to its extreeme strain to my CPU and lagging system its almost the same as just getting a virus.

I need advice on a strong browser that will not allow this to keep happening. It happens with mozilla and I.E. also wanted to add right before each time i get infected i will have adobe flash player pop up and flip out.