Bruce,
Actually, you really only need a Mini Jack to Serial plug and then our USB-to-Serial cable. The SW has a small headphone looking jack on it next to the power button, it is actually a db-9 serial out via the miniJack. This is what you need. No drivers neccessary with this serial connection.
From iLevil:
Mini Jack to Serial Adapter
From iFly GPS:
USB-to-Serial Adapter
With these two adapters you will be able to connect the iLevil SW to your 700 and benefit from ADS-B Weather, Traffic and AHRS, all via a corded connection. We've tested this internally and it works like a charm. Just contact us to order the USB-Serial Cable.
Feel free to contact us if you have any other questions or concerns and have a great week.