For those with rudimentary knowledge of Linux:
Download and burn the Puppy Linux 4.1.2 iso file. (I don't trust the newer ones.....stick with 4.1.2 for now)
Download Avast! for Linux Workstation. Download the .tar.gz version.
From a console, run tgz2pet on the downloaded file.
From the explorer, click on the resulting file. It will self-install.
From the explorer, navigate to /bin, where you'll find a shortcut to Avast GUI. Click it.
Insert a valid key, download updates, and scan for bugs!
Lynn, ComboFix sounds like it is doing exactly what it was made to do now. You will have to apply many updates, but they can be done through the "yellow shield" updater. There's no great hurry, as MCE should have at least service pack 2 already with it.