In the browser right click on the clip and go to Item Properties, and Logging Info, or whatever the first option is. This will tell you the frame rate, compressor, and all the other vitals you need. Though you could just figure this out based upon knowing what your camera settings were as David mentioned.
Once you've figured that out, just use the Easy Setup feature in FCP. Select the correspdoning DVC Pro HD choice. This will help align FCP in all aspects for your footage. Your imports, sequences, and outputs should all be happy at that point.