The card isn't natively supported in linuxMCE, but i'm guessing it should work setting it up in mythtv.
I think kubuntu 0710 lacks the driver for it so you have to download the video4linux drivers and install them ->
sudo apt-get install mercurial
hg clone http://linuxtv.org/hg/v4l-dvb
sudo apt-get install ncurses-dev
sudo make menuconfig
sudo make install
sudo nano /etc/modprobe.d/options
options saa7134 card=65 tuner=54
sudo make load
reboot and enter the mythtv setup from the computing tab of your orbiter; choose capture cards and see if yours is listed.
I'm guess that the remote will be difficult to set up. Best buy a seperate one, like the MCE remote and usb transceiver.