There's not much to your average prototype Windows 7 tablet -- just a netbook running the vanilla OS with a touchscreen instead of keyboard -- but if you've been wondering why you might care to buy one, just get a load of this Macallan UI. Developed by a third-party firm named UI Centric specifically for Windows tablet devices, it features a clean, finger-friendly interface capable of Adobe Flash and Microsoft Silverlight, and uses the crowd-pleasing page flip gesture for multitasking functionality. Perhaps most importantly, however