What that error means is that the module isn't loaded, not that you don't have it.
To make sure you have it you can run
Code:
sudo find /lib/modules/`uname -r` -name "bttv*"
and you should see "/lib/modules/2.6.15-26-686/kernel/drivers/media/video/bttv.ko"
if you want to load the modules at boot then add "bttv" to /etc/modules and make a file called "/etc/modprobe.d/tv_card" and add
Code:
options bttv card=37 tuner=2 radio=1"