Since the Blackberry Pearl doesn't offer Backup Assistant, I have my contacts backed up on the Blackberry Desktop Software program.  Any idea how I can get them onto my new iPhone 4?

I have not previously used a contact management software program and am hoping to just use the native MacAddress Book software on my MacBook Pro.  MacAddress Book does not recognize the file extension (.bbb) from the Blackberry Desktop program and I have no idea how to change it.

BTW - I'm not very savvy with this, so please 'dumb it down' for me!

Thanks!