I'm talking about worms, here. SpyBlocker claims it's blocked sixteen worms since I most recently reinstalled it. Really? As far as I know, I've never had one - I've certainly seen no evidence in terms of odd behaviour on my machine. Maybe I just don't understand the nature of worms. However, I'm concerned that I may have been unwittingly hosting these unpleasant things for some time now, so - how do I scan for them and remove them? Yes, I know - Wormguard from DCS. Unfortunately, I'm out of work and can't afford anything except a free solution right now. Helpful suggestions/enlightenment always welcome!