Thats good advice, but don't you have gear on it already?

You're going to be pretty much limited as to where to connect the gear to the fuselage. The Edge already has a gear location setup. You're pretty much stuck with that.

Put the new gear on the model so the wheels are where the old ones were. If you don't have the old ones, then while you're in that LHS, look at all the Edge models around the place. Almost every one of them will have their wheels in the same place as every other one. Do what they're all doing

And take a look at http://aero-works.net at the pictures of the plane.