Not sure about an article on the web, but I believe I used one from Home Theater Builder. What I did was lay down 1 layer of roofing tar paper on to the bare concrete (at this point forget why this was important), then I used 2X2 set into Auralex U-boats - this raised the floor and helped isolate it from the concrete. On top of the 2X2 I placed 2 layers of plywood (overlapping) with screws and glue.
Auralex has a good PDF guide
here that has a lot of good information on construction techniques, includeing some diagrams of what I jsut described above.
I raised sub-floor in my opinion is the only way to go. In addition to the acoustical properties it adds a layer of isolation between the concrete and the carpet (and feet walking on the carpet). An added bonus, which I did not anticipate was when the basement flooded recently with water. You can see some pictures
here.
Other pictures (post clean-up) can be found
here.
Good luck and ask lots of questions
