Product review (5 stars): Super easy setup
We recently purchased a new fridge and converted the old one into a kegerator.  This kit came with all the parts to convert are old fridge to a kegerator with 2 kegs, but I've only got 1 keg going so far.  The only thing not great about this kit are the instructions.  They are minimal with no pictures. And kind of generic. If you search YouTube for 'convert fridge to kegerator' you'll find some quick tutorials that are worth watching.

The tools you will need to install on an old fridge are a drill with 1" bit (to drill through the door of your fridge), a flathead screwdriver, a medium to large adjustable wrench, and a faucet wrench (recommended, but not necessarily needed).  I used 2 adjustable wrenches and a thick wet towel around the faucet to avoid damage,

After I setup the kit I went straight to Lukas Liquor (south of Denver) where I traded the empty CO2 for a full one, bought a 5 gal. Keg of Hibernation by Great Divide brewery, put a deposit down for the keg shell and was on my way for about $115.

When I got home with the keg I attached the regulator to the CO2 container, made sure all of the hoses were connected and clamped, set the Co2 to about 7 psi and tapped the keg.  I had to turn the Co2 pressure up a bit higher than I expected, but it's flowing nicely now.