Ok, so I have learned that my Blackberry Curve does not have the ability to back up information on your Sim card. If I use the Blackberry desktop manager, I can 'backup' the Curve, but what good will that be when the file is specific for Blackberry?! I did speak to T-mobile and they have a machine in their store that can take phones such as mine and copy the information onto a SIM card, so all hope is not lost. Has anyone else ran into this problem with Blackberry and if so, did you find another work around to obtaining your contacts on to the G1 without having to manually type them in??