Lou wrote:
What will this do to the loading of the aircraft?

Fuel weighs more than air and wood. At full fuel your wing loading will
increase, with all that that entails.

Does this effect the useful load and how? Does it raise my useful load or
lower it or niether?

Neither. Your aircraft has a gross weight, does it not? Useful load remains
the same, difference between empty weight and gross weight.

Since the wings create lift, and the fuel was in the fuselage and now in
the wing should it screw up the center of gravity?

Come on, you're not telling me you're building an aircraft and don't know
how to do a CG calculation? What L.D. said, do a weight and balance
calculation!