Actually I recommend WoW if you can afford 15$ a month. It is absolutely the best thing on the intertron and will continue to thrive. I know a lot of people have been raising hell, but look at it this way: It makes money. It will be there for a long time because of that, and Blizzard has a good...
http://t4c.xavus.com
very low reqs, runs great over dialup, gameplay is addictive, quests are involving and the chat interface is absolutely perfect. The social interaction will keep you playing long after you get bored of grinding.
http://t4c.xavus.com
This game is dated but the gameplay is still outstanding and it runs on nearly anything, on dialup and is super addictive. I lived here for a long time. Also,
www.Kalonline.com
www.roseonlinegame.com
and you can get starsiege tribes free, too
thats all i got that are...