Hi again. This may be the card referenced here:
http://gentoo-wiki.com/HARDWARE_saa7134
(just search for INTEX on the page).
To check, run command 'dmesg' and look through the output for lines starting with 'saa7134'. If it says something like
saa7130/34: v4l2 driver version 0.2.14 loaded
then your camera may already be installed. If not try the suggestion on the web page - as root run
modprobe saa7134 card=3 tuner=14
and check dmesg output again. Once you have confirmed the driver is loaded you can try out a TV viewing application like xawtv. You might have tell xawtv which video device to use, but dmesg should have a line like
saa7134[0]: registered device video0
which shows the device in use (in this case /dev/video0).
Mic problems sounds like a mixer setting problem. Sorry - not very good on sound recording.