I had to replace my first Curve because the "H" letter stopped working. My new Curve won't sync up with my old Curve's desktop manager. When I asked the guy in the store if I needed new software with the new phone he said no so taking his word on that I can't figure out what I'm doing wrong. The new device number shows up on the bottom left hand side but when I tried to make my calendar sync it wouldn't work. I kept getting an error message which I can't remember now since I'm at work and not as home on my personal computer! Any help is appreciated!