guy in my engineering class had one of these. looks like a mini mini asus eee 901
the mouse is a flipped upsidedown optical mouse and you rub your finger over it in order to move the cursor. Crazy neat
some specs
wifi, 1 usb port, microSD slot, 4gb internal storage, runs ubuntu, 512mb ram, 1024 x 600 touchscreen display, an 800MHz Freescale.
downside: no bluetooth, 500ish usd.
not sure what wifi chipset it uses(didn't really look into it). if no one can find online tell me and i'll look at his