Cant get this to work, i have an AMD 2400 ..any ideas?

Its an EDV-S4, and I have downloaded Digivue it worked the first time i installed the card, but didnt see the camera, then when i restarted again the PC hasnt seen the DVR card since ...

thanks, it was a freebe from a client so its not a big deal but its just sitting here wasting space ..

rory