BleepingComputer.com: Need help removing rootkit infection

My PC running Windows XP PRO SP3 is infected with rootkit. Avast and Ad Aware both detected it (but were unable to remove it). I'm unable to launch certain programs (e.g. Spybot) and I get a message when Windows is loading saying "Generic Host Processes for Win32 services has encountered a problem and needs to close." I don't have the original OS disks, so I can't do a clean install. A friend said I should try Combofix, but I thought I'd check with you first.

Thanks,
Mike

This post has been edited by hamluis: 11 February 2011 - 11:08 AM
Reason for edit: Moved from XP to Am I Infected.

Hi Msgood, and welcome to BleepingComputer.

I will request that this topic be moved to the Am I Infected forum where you can get the help that you need to remove this infection.

Hello, ComboFix is a tool that should only be run under the supervision of someone who has been trained in its use. Using it on your own can cause problems with your computer.

Let's see if we can do this.

We need a deeper look. Please go here....
Preparation Guide ,do steps 6 - 9.

Create a DDS log and post it in the new topic explained in step 9,which is here Virus, Trojan, Spyware, and Malware Removal Logs and not in this topic,thanks.
If Gmer won't run,skip it and move on.
Let me know if that went well.