Blasphemy or no, if you want to run a browser (however rarely), system 7 is a must. I enjoy downloading classic apps on a classic mac, and so one of my Pluses runs 7.0* to support MacLynx and MacWeb. It is a joy to watch those bits fly into the Mac (and with the low data rates the Plus can muster, you can almost count them out loud).To me, putting 7.x on any machine that'll run 6.x is utter blasphemy. Old Macs are cheap. If you need to run System 7 for some unthinkable, completely unholy reason, buy a Quadra.