There are two ways to do it, depending on support for your phone. If you can get an iSync plugin (I can't find one for your phone, but that doesn't mean it doesn't exist) you can pair it with your macbook and synchronise changes to Address Book and iCal so new contacts on your phone get added to your macbook and vice versa. I use this method to sync my phone, Palm PDA and macbook. It does mean than when I swapped my phone and Palm late last year I just paired them with the macbook and ran iSync and everything was restored.
The other way, if you can't find a Sync plugin or just don't want to, is to send your contacts to your macbook from your old phone (or type them if it doesn't have bluetooth), then select them all and choose the Card->Send These Cards... menu option to send them to your new phone.
