I am a home user, not terribly technical, and I've been using NOD32 V220.127.116.11 on 2 laptops, each with XP (HE) SP2 along with a separate SW firewall. I'd like to try to upgrade to ESS and drop the other firewall product, but it appears from the system requirements note on the ESET product description that I need SP3. I only use the laptops for internet access/surfing and email, nothing terribly sophisticated. The laptops have been stable for a long time and so I'd just as soon not install SP3 if I don't have to do so. Can anyone tell me what issues I might have if I try to install ESS with XP (HE) SP2 and/or offer any advice? Many thanks.