Make sure you have two wires going to your starter. There is one with a little tab that just slides on, i've seen them fall off. Without it, the car will not crank when you turn the key. If it's on good, try running a wire from the battery positive terminal and touch that little tab on the starter. If it turns over, the problem is either a clutch/neutral safety switch, or your ignition.
Report back when you know.