I have been using Avast Free, along with Sygate Personal Firewall with Win98SE, works perfectly, also using Firefox 2.0.0.9, the current version, so far, everything works together without problems. For my computing requirement, Win98SE performs well. I am not a computer techie, not of the computer generation, so my P3, 256 megs, radeon 7000, ultra lite cable internet accomplishes everything that I require. I also use Open Office, The Gimp, I feel that I am not lacking in any major way.