If you were one of the first to buy the new T-Mobile iPaq 6315 and you want to use Skype you out of luck. The Skype program needs a x400 Intel processor, something the 6315 lacks.
About Skype for Pocket PC Version 1.0:
Skype for Pocket PC Version 1.0 can be simply download from www.skype.com. processor and equipped with WiFi, a headset is recommended. Skype for Pocket PC Version 1.0 works on any PDA running MS Windows Mobile 2003 for Pocket PC software with a 400 MHz XScale processor and equipped with WiFi. A headset is recommended. The application download and a Skype for Pocket PC Version 1.0 FAQ is available at www.skype.com
For those who want to have Skype, WiFi and GSM they will have to wait for the XDA III which has the faster and more robust (read powerful) processor.
Skype also announced that they are working on fixing a different bug affecting some PocketPC’s as well.