Creating Shocks for Vehicles

Anyone have insight on how to do this? I have a vehicle, tires, but nothing connecting them :-(

I want to employ a shock system similar to the buggy demo, but it looks like the max file that is created from is from a previous version, as the wheels are no longer required to be in the body mesh file (I am assuming). Also, without any words to go with what Im looking at, its a little hard to decipher exactly what's going on.

Any tips, tricks, or general info would be helpful. Thanks!