From what I know Restless Leg syndrome is when you are sitting (or laying) down to relax in the evening or go to bed and you get a "creepy crawly" feeling in one or both legs and you have to jump, and it keeps happening. It can really ruin a nights sleep! My dad has this problem and takes some type of medicine for it... I've had the problem on a few occasions after taking my nausea medication (phenergan IM). There was an article in our local newspaper about how putting a bar of soap in your bed sheets is supposed to alleviate some of the problem, but I have never tried this, and to my knowledge neither has my dad...
Hope that helps some! :)