Hi,
The newer versions of FMS do not support the parallel or com port interfaces but there is an even simpler solution. There is a free software interface called SmartProPlus. All you need to make is a cable that will connect between your transmitter and the microphone input of your sound card. It sounds far too easy - but it works very well.
All the information for making the cable and downloading and running the software can be found on the SmartProPlus homepage:
http://www.smartpropoplus.com/Let us know if you run into any problems.
Good luck
KEW