Problem with malware/spyware/rookits whatever it is

Okay, I have been doing research all day and beating up on my bro for getting this crap on my computer, but I think the problem _still_ persists, so here's a bit of background info.

I am running a Windows XP home edition with McAfee antivirus. And I have been battling spywares for the whole day after my brother did something. (and by all means, I have no idea what i am doing, just been googling for solutions)

First came something called a Winfixer. I downloaded virtumundo and deleted it, everything seems fine with that right now.

Then there were a bunch of trojans and unwanted programs that McAfee caught and removed. But they just kept on coming.... Sooo I dunno what happened there.

And Spybot S&D picked out smitfraud.c, which I think i removed by following instructions.

But after all that, I scanned one more time with McAfee and found 3 more viruses that it couldnt removed. They were all named Adware.(something)... one of them was named Yazzle. However, McAfee couldnt delete them and I couldnt find them in the folders stated.

And now... i cant even get on a wireless connection and get on the internet in normal mode. I am currently in safe mode.

So i am really really pissed. I wasted my whole day and got nowhere. I have no idea on how to read HJT logs and such. So any help would b appreciated. I really dont want to reformat since i have alot of research and papers on this computer from college. I guess I will just go beat up on my brother for the time being =/

(PS: I use McAfee, Spybot S&D, And Adware by Lavasoft... I also think i might have rootkits, soooo help plz >.<)

should i also note that now, as of 2:28 AM California time, Spybot S&D is not picking up anything. However, I haven't deleted anything prior to this, and i did see a little exclamation icon that says "your computer may be at risk, click to fix"... (NOT the windows security one but one of those spyware yellow ones)

Thanks in advance

 

didnt mean to bump but cant find the edit button? Last update for the day: I seem to have removed the rootkit or whatever that was stopping me from accessing the internet. I can now go on the internet in normal mode. But i would still appreciate it if someone can help me out with the other potential problems just for safety's sake.