Conhost.exe, Csrss.exe, and Dwm.exe--What to do?

I have three viruses on my computer, one is located at:

C:\Users\Nate\AppData\Roaming\Window\conhost.exe

The other is at:

C:\Users\Nate\AppData\Local\Temp\csrss.exe

And lastly:

C:\Users\Nate\AppData\Roaming\dwm.exe


The problem is not finding the viruses, that's easy. It's removing them, that seems to be the trouble. The first alert popped up yesterday with "AVG Free 2011," around 3pm. It pointed out these three files to me.Then, I installed ESET NOD32 Antivirus 4 Trail version. ESET picked up those files as bad. Now, I ended up uninstalling all antivirus software to see what would happen, and after the fact, everything worked. However, I hated knowing that I had a virus on my computer; so, I reinstalled ESET NOD32 Antivirus 4, and it picked up those three viruses again. Before I uninstalled it, however, if I "Quarantine" them, or "Remove" them, then my internet no longer works. I am however allowed to access "https://www.website.com" websites with "https://" as it is a secured connection. Another thing, whenever I go to "Google.com," and search for something, every now and then I'll click on a search result link and it will take me to a website that was not the one I intended to go on. (i.e. "www.scour.com"). I usually am at home behind a firewall, but I'm out of town and I connected to a "Public Network," that has no security whatsoever. I assume that's the reason I got this virus. Any help would be appreciated. Thanks!

Also, whenever I navigate to a page, ESET blocks the following site:


http://i.imgur.com/hPqyD.jpg

 

Have you run a full system scan with the signature db 6294 installed?

 

Is that the latest DB? I ran a full scan this morning at 1am.