So wot u guys think about this for tablet pc's especially for Slate models :D

http://www.internity.co.uk/images/cms/VKB-animation.gif

You can use the I-TECH VKB (Virtual Keyboard) with both your laptop and PC,
and with a compatible mobile device (see compatibility) because it works as a
mobile phone keyboard or pda keyboard too!

The Virtual Keyboard (VKB) works by using both infrared and laser
technology to produce an invisible circuit and project a full-size QWERTY
keyboard on to any surface. The infrared keyboard behaves exactly like a real
one: direction technology based on optical recognition enables the user to
tap the images of the keys, complete with realistic tapping sounds, which
feeds into the compatible PDA, Smartphone, laptop or PC.
--
ACER TRAVELMATE C302XMI