With an old Intel on board GPU, you should stick to older distributions that use earlier or more lightweight desktop environments. The new desktop environments like Gnome 3 and Unity require a modern video card, and even with that the performance is quite slow. Maybe you could try some distros that use Gnome 2.x, like Debian or Ubuntu 10.10 and lower. You could also try this desktop environment I've heard of that's quite lightweight, it's called LXDE, you can use it in Lubuntu. Sorry if I can't give you more distros, I'm not really familiar with others, but you could just search for them on the internet. Good luck!