While Clearwire's Clear Spot (which is really just a refashioned PHS-300) will handle WiMAX right out of the box, those who own one of CradlePoint's existing portable routers are flat out of luck or are they? Said company has just announced that starting today, shipments of its business-class routers -- including the MBR800, MBR1000, and MBR1100 line of mobile broadband routers, CTR500 mobile broadband travel router, and CBA250 cellular broadband adapter -- will have WiMAX compatibility built in. Furthermore, a forthcoming (April 6th) firmware update will ena