Sprint has already slipped details of what its WiMAX-based Xohm wireless service will feature when it launches later this month, a set of hidden pages show. The company'S device list and FAQs show the firm will have just the N810 WiMAX Edition as its stand-alone device and will primarily rely on PC adapters, including a ZyXEL router as well as a Samsung ExpressCard modem and a ZTE USB modem. Not