Replying to HELP w/ DV Cam stuff

alright i need some help here--this has been going on for a while, i just never posted on ns for some reason. ive got a canon dv cam and an ieee 1394 thing all set up on the comp (i installed the card, it didnt come built in, if that even matters), but whenever i try to capture, it drops tons of frames--it will capture for a few seconds, then freeze, then pick up and capture a few more frames, and then pause again, etc, etc.....the frames dropped # is usually higher than the successfully captured frames......i've tried it on 4 programs, and on 3 of them, it does this-- intro dv (came with the card), adobe videowhatever demo, and pinnacle studio 7.0. the computer is 750 mhz, and i have plenty of free space on the comp, the control panel things says its installed correctly, so there's no reason why it shouldn't work. anybody got any suggestions? PLEASE? ayuda!
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