I think I was too optimistic about the 2.6 kernel being ready to go, so I am getting out of my depth. Apparently there are some other steps involved in getting things set up, including getting 'firmware' for your card. See the documentation in Documentation/dvb in the kernel code and also the various README files that come in the dvb driver package from linuxtv.org:
http://linuxtv.org/download/dvb/linu...-1.1.1.tar.bz2
All this also has advice on the apps to run with the card. Sorry I can't give you a step-by-step HOWTO, because I haven't done it myself.