Here's a list of what you will need. Starting on the products page in the fittings link.
http://www.sodadispenserdepot.com/#3116 swivel nut 1/4" 2
#3120 barbed stem 2
#4291 washer 4
#3118 swivel nut 3/8" 2
#3121 barbed stem 2
#4292 washer 4
Moving to the tubing page,
#5151 1/4" braided tubing 50' You can remote the carb to anywhere you like and run tubing to the dispenser, I got 50' so you will have a little extra. 5' will be plenty for the CO2 line
#8152 12.3 stepless "O" clamp 12 Make sure this is the correct clamp for the tubing they are selling, according to their page it is. I don't recommend using screw type hose clamps but if you more at ease doing that you can.
#8111 Pincher 1 If you have a way to crimp these clamps you don't need this. In an emergency a pair of side cutters will work if your careful.
Moving to the CO2 and regulator page,
#7148 Fiber washer 1 these are sold in 10 packs, this is the washer you need to put into the fitting on the bottom of the machine before you put in the barbed 1/2" fitting you bought. Check to make sure the old one is out.
Don't forget you still need a CO2 tank, any welding supply or fire extinguisher company will sell you CO2. If you buy a new tank you will still need to have it filled and they can't ship cylinders full.
You also need syrup, Sam's sells Bag-in-the-box syrup or go to your local Coke or Pepsi office. They might still sell in gallon jugs. You can also hit them up for CO2.
When you get everything gathered up I will send you my phone number and we'll go over what you have to do.