Anyone used Linux on HP Touchsmart IQ820?

We went into Saturn last week to have a look at notebooks, and ended up playing with the Touchsmart IQ820 desktop.

My girlfriend is quite taken with it, and I must confess I am also impressed.

It runs Windows Vista of course, and was just wondering if anyone has one of these, or has tried Linux on it.

It’s very flashy, being a 25inch touchscreen, fun to play with, and looks very nice too. But I also need to know if the graphic card can be changed as it comes with a (relatively lousy) NVIDIA GeForce 9600M GS.

I would want to change it for at least a GTX280M.