Having a Problem Wiring a Computer Fan

Hey there guys. First of all, I wanna say thanks a lot for all that you guys do on this forum. It has helped me out so much and I really appreciate all your advice/help!
Alright so yesterday I went out and bought a 12v AC to DC Adapter, http://www.radioshack.com/product/index.jsp?productId=2191852. I planned on wiring this up to a PC Fan that I bought on Ebay, http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=370089263069.
So when I got home, I cut the Power Adapter tip off to show the wires and did the same with the fan. Wired them together, plugged the Power in and I got nothing. Switched the wires and tried to hook them up the opposite way, still got nothing. If you guys could take a look at the combination I have here and suggest anything, I'd really appreciate it! One love!

try putting the wires onto a 12v light bulb. such as one from your car and see if that works. if it doesnt its the power suply

Hey man, thanks for the reply, but unfortunately, I dont have a car.

you know you can just buy adaptors for PC fans right, so much easier.

It should work though, red to red, black to black.