First you need to decide between a Tap-A-Draft style system or a corny-keg system.

Tap-A-Draft has a few advantages: fits in the fridge (each bottle holds 6L, and the regulator/tap assembly attaches to the bottle), and the system is much cheaper to get into.
Disadvantages: the regulator takes 8 oz CO2 bulbs (2 or 3 per batch), the regulator is not adjustable (set at 15 PSI), and if you want more than one brew on tap at a time you need to buy another regulator/tap assembly.

Corny-Keg system advantages: a single keg holds 19L, CO2 is purchased in bulk (about $15 to refill a 10lb cylinder, which should last at least a years worth of brewing), carb levels can easily be adjusted at the regulator, and the corny kegs are pretty much indestructible.
Disadvantages: rather pricey to get into, and a dedicated fridge or chest freezer is needed.

If you want to go the corny-keg route, you'll need: a CO2 regulator (try to get one with a back-flow preventer or at least a valve on the outlet), a CO2 tank, corny kegs, draft line (the vinyl stuff, sized for your fittings), in and out connectors for the corny kegs (Pepsi kegs are ball-lock, Coke kegs are pin-lock), and a tap (a picnic-tap will do just fine). If you get the cornys from princess auto, you should change out the o-rings (or at least pressure test the keg) before you fill it with beer.

When you keg a batch of beer in a corny keg: fill the keg to about 3 inches from the top, lock the hatch, and then chill the beer. Set the regulator on the CO2 tank to your desired pressure (I usually keep it around 10 PSI), then plug it on to the in side of the corny keg (you'll hear CO2 rushing in at this point) - never let beer run back into the regulator! Leave the keg pressured up for about a week, and your beer should be carbonated. I usually carbonate my beer in about 10 minutes by cranking up the pressure and shaking the keg. When dispensing, turn off the CO2, and then use the pressure release valve on the hatch of the corny to release some pressure (you don't want to blast the beer into your mug), and then fill your mug with the picnic tap attached to the outlet side of the keg. When done dispensing, be sure to pressure the tank back up.

If you want to get fancy, you can do a calculation as to how much dispensing line you'll need to drop the pressure at the faucet to about 0.5 - 1 PSI for dispensing, then you can leave the pressure on the keg all the time.

You can get the Tap-A-Draft and the corny-keg system at Southside Winning Wines Plus, or you can find the stuff online.

Hope that helps.

Princess Auto in Mayfield still has a few kegs left, it looks like they got a fresh pallet between my last visit and now and people have descended on it with great eagerness. June 19.

Any oxypro location will do it. You just drop off your empty cylinder and they give you a full one. I think it's just a hair less than $30 for a 20lb cylinder.

In the past I have used Praxair, now I use OxyPro (8604 53 Ave). It's pretty conveniently close to where I live. I don't remember how much it cost to fill my 20 lb. cylinder last time, but it was somewhere around $20-$30 dollars (maybe a little more, but I don't think so). You will probably be able to fill it at any welding shop close to where you live for a similar cost.

As of Saturday March 7 @ 10am, the Princess Auto on the south side (Edmonton) had 20 ball lock kegs left @ $25 each.

My sister in-law works there, and they're sold out now.

They were pin-lock.

I have a real problem navigating the Simgo website. I honestly can't make head or tail of it. I was looking for barbed swivel nuts, and couldn't find them. They have drawings rather than photos. It's madness! There's a new Canadian online brewing supply outfit:

http://www.homebrew-supplies.ca/

I also just placed an order with these guys. Excellent service. I spoke with Ben on the phone today, and got it all ordered and shipped by USPS (to avoid UPS brokerage fees). I spent about $210 for a 5lb tank (Aluminum), a regulator with dual check valves, 8 ft of gas line, 10 ft of beer line, a couple of disconnects. In town, I was looking at $220 for a regulator that I still needed to add valves to, and a 5lb tank.

I wouldn't mind doing a group order.. For only $30. I would like to buy at least Two. Or if anybody has any they would like to sell my email is jlvanwagoner@gmail.com

Thanks, actually found a keg at a store here in Edmonton.