The need-to-know part of configuring this card is knowing which values to pass to the bttv module. What I found was that first of all, it seems that using either 13 (TVCapture98) or 41 (TVPhone98) as the card value will do. Also, both 38 (FM1216ME MK3) and 41 (FI1216 MK, available in later versions of bttv) seem to be working solutions as the tuner value. Note that 5 did not work for me (even though it's referred to as FI1216 and compatibles in the listing). What I did was load up modconf and pass these arguments to bttv (under kernel/drivers/media/video when using kernel 2.6.9 like me):

card=13 tuner=41

If the bttv driver has already been loaded during boot, you'll need to unload it first, of course. At first I was a bit confused because the bt878 module was using the bttv module, and it was located under kernel/drivers/media/dvb/bt8xx which wasn't too apparent for me (I've never had a dvb card) so it took me some time to find it to be able to unload it from modconf.

Later I hope to be able to get the remote controller working too. I know it's possible since I've had it working before once.