iDEN Phonebook Manager is a free PC application from Motorola that lets you edit your iDEN phone's contacts on a Windows PC. It also lets you backup and restore your contacts, transfer them from one iDEN phone to another and print out a contact list. iDEN Phonebook Manager requires a data cable and works with Windows 95, 98, NT, ME, XP and Vista. I don't know if it works with Windows 7.
Note: If you have USB connection problems using XP or Vista, please follow these instructions from the ReadMe file.
Go to device manager by right-clicking on "My Computer" and select "Manage". Select "Device Manager" on the left pane. Then select "Universal Serial Bus controllers" on the right pane and expand it. Double-click on "USB Root Hub". This will bring up the "USB Root Hub Properties" dialog. Go to the "Power Management" tab and un-check the "Allow the computer to turn off this device to save power". Click "OK". Repeat this process for every USB Root Hub under the "Universal Serial Bus Controller". Reboot the computer. Then retry the operation.