Jon,
The iFly 700 will auto recognize the SkyRadar. I'd recommend getting both the iFly and SkyRadar up and running. Then just plug the S2 USB cable into the iFly 700 USB port and it should auto connect. Under the Mode, you should see Weather (ADS-B No Data). Keep in mind, you will typically need some altitude for the SkyRadar to start pulling in a signal. Once the data stream is coming through, you should see ADS-B No Data move to "ADS-B Live" Feel free to give us a call if this does not work for you.