Heck truing the wheel is easy.

figure out what direction you want to pull the rim. Loosen a spoke or two on the oppositie side to allow for some slack, Then tighten the spokes on the side on which you wish to pull the rim.

Give it slack to move, then pull the correct direction. All common sense.

If the out of true area is a large area, there will be more spokes involved. If it's a smallsection, maybe 4 or 5(that's based on a 32 spoke wheel).

Look at SheldonBrown's site on wheel build and repairs.