It is not that difficult. Have you decided what pump you wanna run for the recirc? Also from what I was reading adding a gate valve seams to really help with that particular skimmer.
Figure out what size fittings (likely be either 1/2" or 3/4") your pump that you choose uses. pickup a couple of unions, 90 degree fittings, and a small peice of pipe. Also, get uniseals to connect the pipe to the body of the skimmer. You will have to use a hole saw to cut through the skimmer. The size will depend on which size uni-seal you have to use. You can get the uni-seals from aquatic eco in apopka. You could also get clear pvc from them as well.
I now the above is not real organized so feel free to ask pm with questions.