Ah ha!

Sharp camcorder. I recall from recent posts on a sharp camcorder that these cameras need to adjust the delay on pre-roll times. I use Ulead myself with a Sony Camera but I am convinced that this relates to delay and pre-roll. See post,
http://www.videoeditingforums.co.uk/viewtopic.php?t=904
Unfortunately I do not know how to adjust this in Videowave, but if you read the post you will get an idea of what is required. I'd be surprised if its a driver problem as Microsoft use standard DV drivers for video tranfer.
Have go and post back to let us know how you got on.