Originally Posted by Motorcycle Mama
1. You can use the Device Switch Wizard in BlackBerry Desktop Manager to transfer the information over to the other device.
2. Press the GREEN phone button. ;)
Switch Device is only applicable if you are migrating from one device to another.
You should be able to use the same instance of DM with both devices. Worst case. However, you will combine contacts and calender data.
If not, set up your calendar and contacts in Goggle and sync that way, at least for one device. Particularly if you don't want to mix contacts and calendar info.