Globe-trotting BlackBerry users who prefer Verizon's wireless service--and there are many of them--have had to put up with service blackouts outside North America. The new BlackBerry 8830 World Edition lets them have their cake and eat it, too. At home, it runs on Verizon's CDMA voice and high-speed data network. Abroad, the 8830 magically morphs into a Vodafone GSM handset for voice and solid, although slower, data. You need never miss an e-mail again