Using NOD32, MS AntiSpyware and PG I just started using ProcessGuard recently. It works really good. I have had a few alerts which look like they were not bad and so far I don't think I did anything wrong. I must have read the whole help manual about 10 times by now Mostly I just allowed Global Hook for some programs Last night I had one which could have been a virus try to modify explorer.exe. I sent it to NOD32 and they say its a new trojan "downloader" and will detect it with the next update Now I assume other antivirus work like this too, what are the chances of me getting a new trojan which isn't detected yet ?? Obviously new viruses must be missed sometimes ? ProcessGuard protected me in this case so I think PG is well worth having since it can stop things like this. Mainly interested in 2 things.. what others think about this type of protection and has anyone received new viruses not detected ? how often ? is this very common ? I use to think antiviruses were invincible..