I have a need for a lot of computer controlled AD and DA channels. Currently I am using long ISA cards in a rack mount case as a solution. The rack uses single board computer cards on a passive backplane (expensive for my budget). I was wondering if there is any way I could migrate this functionality to a standard PC. I know that most motherboards barely come with ISA anymore, letalone room for one of my monstrous cards. This may seem silly, but is it possible to use a card in a PCI slot with major modification? I know this is a tough problem, but any suggestions of any type would be beneficial...thanks in advance mates.