Dropper.Small.5.F Trojan Horse

I keep getting a pop-up that says I have the trojan horse “Dropper.Small.5.F” and to get rid of it I should run AVG anti-virus.

I’ve run it, re-booted, downloaded the newest version, ran it again.

I’ve also ran AdAware and SpyBot, to no avail. Apparently, I still have it.

Anyone know how I can get rid of this?

Drat, double post. Can a moderator close this, please? Tx.