Just cannot get webcamXP to work with more than one input on each capture card, and have had issues with it just stopping sending emails when it was working as the trial, so not keen on buying it.

Have 2 4 port BT878 cards with 2 cameras on each, and 2 USB capture devices (easycap) with one camera on each for a total of 6 cameras, have just been switching the bt cards over via VNC to see the others, but really need a proper solution.

The PC is an old 3.06GHz P4 era machine (so virtually scrapheap material) running XP, but as this is all that it does I would be fine with a linux based DVR package, so long as it is able to do a quad split on the VGA output of what is happening at the moment.