I have a proprietary (old) PCI (level 2.2) card which needs a bus speed of 33Mhz and controls a scientific instrument. The old Dell PC that it was in has died. I have tried it in several newer computers and it is very unstable. Can somebody lead me to a PC that will be able to handle this card. Also, if you can suggest a motherboard that will work with the card I can put it together myself. Any help appreciated.