I was given the BlackBerry 8830 World Edition for Christmas because I will be traveling in Europe for 6 months starting in January. I'm just worried about the cost of calling and having people call me while in Europe. Will my European contacts have to pay long distance to call my number? Also, what will it cost me to call intra-continentally? Can the 8830 be used as a modem for my MacBook Pro? How do I do that? Any enlightenment on this subject would be greatly appreciated!