Small world. I am in the midst of doing the very same thing. My two sons have recently shown an interest in RPG's so last week I ran them through some rudimentary scenarios I whipped up using my 20 year old original AD&D manuals. I was amazed how quickly it all came back to me after not having played for two decades +.
Despite my rustiness, everyone enjoyed themselves enough that I thought I'd try progress into the modern era and try D&D 4e. I bailed on that idea when a little research revealed that things on the D&D front have changed in ways I wasn't at all happy with. Needless to say, I was very pleased to discover Pathfinder as it sounds like exactly what I've been looking for. Spiritual successor and all that. Perfect. I've yet to pick up any books, but I'm off to do that tomorrow.
Great thread, and great forum/community you have going here.
Thanks!
datter