Terratec cinergy htc usb xs

[IriDium]

If it doesn't work "as is" or with tweaks - it will mean getting the Xbian kernel source - making the changes to the .c file and recompiling the kernel.

However, this will also mean you will be unstable with any future releases, so it seems to me a bit of no brainer - unless you want the experience.

For £30 or whatever they are, it would be easier to just buy a new TV card - see the RPi website for supported cards.