Different Trojan Horses All In One Computer Weyhey :(

hello everyone my names david and im from france
anyways,since yesterday AVG keeps telling me i have a trojan horse,and i keep clicking heal,but the problem is a few minutes later another comes up i have some names not that they mean anything to me lol (trojan horse generic2.FAA;trojan horse generic2.SKB;trojan horse lop.AS)
those are only some of the one i keep guetting
please can u help me,im begging u!!!
o and another thing,
i think the reason im infected is that i went on this web site yesterday in order to get a serial key for a game me and him played!and since that website the problem has occured!!!
o and another other thing lol (sorry to bother you all)
i have this window which keeps poping up(all most as often as the trojan one(arent i the lucky one)) and its a pornographic one and so its really really gay having that pop up every 10-15 mins!!the pop up window is something like pornweb.tv i think

also on my computer i have:adaware se personal,spybot S&D,AVG,and my firewal is turned on even though i get this pop up thing

thanks for the help im hoping im going to get

otherwise my last resort is to just format my computer but the thing is ive only had it for like 4 monts and had internet for like 1
take care
david

Hi popiette, Try scanning once more in safe mode
How to start Windows in Safe Mode

Then run this: download ,install and update (leaving a start up icon on the desktop and scan also in safe mode. Use Free Home User version

http://www.superantispyware.com/

run this Online scan (normal mode)

http://www.trendmicro.com/hc_intro/default.asp

If problem still persists, follow these instructions Preparation Guide for use before posting a HijackThis Log
Post that info HERE,, by clicking 'New Topic"

btw Welcome to bleeping computer