I have a new Curve 8900 on ATT and I'm having problems with my contacts. I use a Mac and I've tried 3 different syncing programs to get my contacts synced with the correct categories. Tain't happening!! Also, I can't delete a contact from my phone nor can I edit it. I get a message saying " Contact updates externally, yadda yadda yadda" What can I do to correct this probkem?