Help, I think I am part of a botnet

I was running wireshark after having suspicions that I had spyware, and yup, I could see my computer making all sort of TCP and HTTP connections to random I.P’s. I opened my firewall logs and took a screenshot

http://i53.tinypic.com/mli4np.jpg

What do I have to do in order to get the svchost.exe to stop doing this? I’ve scanned and found nothing and i’m not sure what to do?

Hi again, I have found out a way to block ALL connections in and out thats on the svchost.exe and I also found out where this botnet or something is originating from. I have come to a conclusion that it is a trojan downloader, after seeing it download a file setup.exe before my eyes.

It saved it to C:\WINDOWS\Temp\wdth\setup.exe and it is only 123kb

How do I submit this file for analysis?

Submit it here.

Also, please see this post about How to Know If Your Computer Is Infected.