Unless you need to run OS X software, go with OS 9. As Scott said, for web browsing, Classilla is available now. For AIM access, AIM 4.3 should work, though I haven't used it in qu…
Thanks for the confirmation that I should do the analog boards too. I've heard of "Macintosh Repair & Upgrade Secrets" - while Alibris has somone selling a new copy for $9…