The problem is that Microsoft has targeted the Mira devices at the home market, while the Tablet PC, a separate more expensive and fully featured device type is aimed at the corporate market. However, Mira will currently only run with XP Professional, because this includes a key piece of software needed to run the Mira Terminal, a software server that supports the Remote Desktop Protocol (RDP).
To get round the problems, Microsoft is now considering either releasing a service pack for XP Home Edition which will include an RDP server, or alternatively forcing Mira Users to upgrade to XP Professional Edition, according to Eddie Wu, Microsoft's senior director for Microsoft's Asian Embedded Systems Group.
Source: ComputerWire