Here are the details on how Solly got the capture card going:

{{{
modprobe bttv card=42,42,42,42 p11=1,1,1,1 tuner=4,4,4,4
}}}

He also used [http://www.ituner.com/new_pdf/Smanual.pdf this manual].  It seems to be an iTuner Spectra 8 4 port capture card.

To get it working on simpson you need to remove the current bt878 and bttv modules, modprobe them both properly.

Make a script with this in it to fix stuff:
{{{
rmmod bt878
rmmod bttv
modprobe bttv card=42,42,42,42 p11=1,1,1,1 tuner=4,4,4,4
modprobe bt878
chmod a+rw /dev/video*
}}}

To record stuff, use:
{{{
xawtv -c /dev/video1
}}}

Colour is really bad, it is slightly better if you turn Chroma AGC on.

When recording videos, make sure that you don't try to record sound and you choose a sane output format (I use avi movie driver with JPEG format at 15fps). 

The interface in xawtv is really bad. You need to have your mouse over the textbox you are entering stuff into for it to work.