i use an elliptical almost everyday, how much does it build my legs up, i.e. gluts and quads? are my legs going to get significantly bigger using an elliptical versus straight up running?

No, your legs will build little to no muscle performing cardio on the elliptical (all depending on your diet). There is not enough damage done to your muscles to encourage the repair/rebuild process of new muscle tissue.

Ditto, and moving to the treadmill wont help either. You need to tear down the muscles with a sufficient load (weight).

cool, thats what i was hoping for. i'm definately not looking to make my legs bigger, i already have large quads and a bubble butt left over from my football days, thanks!

Working legs in a weight training routine is crucial however.