FPS

If your aim is to regulate movement speed, limiting FPS is the old-school way of achieving it.

Move your character using delta time.

Good article on different types of game loops and how they are implemented:

That's a great link, random_acts. I remember looking for something like that a while ago. I wish I'd found it then...

That is a really cool link. I did post this in a different thread if you want though to lock the framerate however:
http://www.gamedev.net/community/forums/topic.asp?topic_id=494008
(it's my last post)