Dave,
This is an easy one. I have the same camera and use the Azden 200ULT UHF wireless system. This particular setup has the capability of picking up two separate channels from two different transmitters at the same time using different frequencies. This particular model comes with two bodypacks and lapel mics but you can get handheld mics too. You just plug the receiver into your MIC input on the camera and each transmitted channel is laid down on its own track so you can do whatever you want to them separately.
http://www.azdencorp.com/shop/customer/product.php?productid=93702&cat=0&page=
I’d shop around. Don’t but them direct from Azden because you would be paying the full price. Check B&H Photo.
RAM
