Tech: Thanks for the definitive response. At least I know not to waste time trying the various Avast products only to find they cannot be portabilized. (Hm. Is that even a word? ;D )

Simeon: Thanks for the suggestion. I’ve used a-squared free in the past as one part of a whole battery of tools to help some friends clean some nasty infections off their machines, so I’m inclined to try them out again for myself.

Haven’t had a chance to try out the other possibilities, but once I do, I’ll try to ensure I post the results here for the benefit of others.

regards,
– forbin