Hi. Wanted to share my experience between the two methods on Tethering with AT&T. I didn't have the need to test the ipcc method as PDAnet 1.53 works very well. However here are my observations. Tethered using PDAnet observations: * 1.8 Mb/s Download / 0.16 Mb/s Upload * Local Area Connection shows 2.4 MB/s * Cisco VPN Connects/tested * iPhone remains relatively cool Tethered using internal modified ipcc file. * 0.55 Mb/s / 0.16 Mb/s Upload * Local Area Connection shows 500 Kbps * Cisco VPN Connects fine/tested * iPhone gets relatively warmer. I would like others to articulate the temperature readings. cheers.