9 out of 10 times, when trying to capture video from my camera, the picture will not show up on the capture preview window - and even when it does, and i move on to capture another bit, the video then disappears.

i am using a sharp VL-PD6 digital videocam and a Pinnacle Studio DV PCI - i have both the Pinnacle Studio V7 software as well as Adobe Premier 6 - both seem to have the same problem.

is there any obvious things to try - any help much appreciated.