Bob, check out this site
http://www.wowstatus.net/
A complete site dedicated to offering FREE WOW SERVERS.
Yeah you may not get all the newest updates, may not be able to play with as many people, but you do get to play for free! Blizzard is working on shutting them down, but it won't happen anytime soon. There's just too many.
I had 10 day trial of wow, I think I lasted 30min. Just didn't like it. Guild Wars all the way!