Removed virus but still shows up in task manager

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I have the paid version of McAfee installed on my computer, but it's not fully removing 2 viruses that I got from a website while viewing it.

dwm.exe virus ( not desktop windows manager / there's another one, in different folder location, so I know it's a virus )
can't remember the other name.

I normally disable them Via task manager. McAfee can't detect them, so I installed another software and removed them.

The only thing that I can think is that they're still in the registry.

Any idea on how to remove them, without uninstalling my anti-virus software, because I paid for a yearly subscription?
Hi there

I find hijackthis a great tool to get rid of nasty unwanted things on my computer. It does not seem to work with the postman though who keeps giving me nasty unwanted bills.