Right, do you have your ASIO driver setup? First, install Line 6 Monkey, from their website. Run it, and make sure everything is up to date.
Next, you need to setup the ASIO driver. To do this, go to Devices -> Device Setup. There is an option called VST Audiobay. Click it, and select ASIO PodXT from the drop down. Now your POD is setup to record via USB...
Im not 100% sure that this is the right way, but it works for me....