Good f2p MMO with few restrictions that works with very low end laptops/PCs?

Me and my two cousins are looking for something to play that is preferibly a F2P MMO simular to Dungeons and Dragons online. We want something with minimal restrictions for f2p(locked areas are fine, but not if about 75% of the game is locked,) and we Really need it for a low end PC. They can run some stuff, but D&D online pushed one of there's too far and it just wouldn't start.
I don't know there exact specs, i suspect 2GB ram and Intel GMA.
I realise they are very low end, and arn't designed for gaming, but they can run some MMOs like Everquest and Wizard 101, and even minecraft runs at low FPS.
Luckily, my PC is much higher, although it makes it harder to know what works.

Having a low end pc, i suggest you focus on browser mmorpgs. Don't let the word browser throw you off, there are some great browser mmos out there that really rival some of the downloadable ones in terms of graphics and quality.

Below are some suggestions:

Drakensang: http://mmo-play.com/browser-games/drakensang

Wartune: http://mmo-play.com/browser-games/wartune

Lunaria: http://mmo-play.com/browser-games/lunaria-story