If you're planning an international trip, you'll need to ensure your passport is valid and up-to-date. In the past, you'd have to visit a passport agency to renew it, but that's no longer the case. As ...

Peter is a writer and editor for the CNET How-To team. He has been covering technology, software, finance, sports and video games since working for @Home Network and Excite in the 1990s. Peter managed ...