Just wondering how your experience has been overall.
I've done this and it's fantastic. Works without hiccups. (After the new MyWi update, the old one had some troubles shutting down the app but it wasn't horrible, just tedious at times.) I stopped using it though as it is quite expensive unless you have a decent data plan. But over all no issues experienced.
Models:
iPhone 3GS 32GB / iPad WiFi 64GB