I too have been lookind for a free AV for Win98 with no success, yet. Although many advertise that they are 98 compatible, once downloaded a message appears saying that a newer version of Win was expected. As Broni says (and I'm sure he's right), Avast 4.8 would probably work if it could be found. Unfortunately once at the site( from what I can see) they only offer a newer version that is not compatible with 98. The only AV that I could find to work(and it's mentioned in this thread) is Solo, and it's not free. I hope someone can correct me (free AV for Win98), but until then I'll keep looking. overthehill