Lenovo's come to the aid of road-weary business users who want a second screen for their laptops but think a Spacebook is a little excessive. It's just released the 14-inch ThinkVision Mobile Monitor to accompany its new ThinkPad Edge laptops, which gets both power and data via USB, has 16 brightness settings and packs an independent kickstand. It can either be used as a dual display for those mammoth spreadsheets or as a presentation screen where lugging around a projector just isn'