Hi bob3160,
This free non-resident scanner has been around for quite some time now, real decent product, and nice to have as an additional.
It has the only hick-up of the DrWeb scanner's heuristics, that is an additional FP have to be taken into the bargain, so always evaluate the scan results.
I use it a lot, download a recent version though. I can say nothing wrong about this one, good memory scanning to start off, then quite profound scan of all files.
polonus