What camera will display view on laptop?

We are having trouble getting "home" shots of art work to get into accurate focus. The Pentax K10-D auto-focus isn't accurate enough. Is there a comparable digital camera that will let us pipe the view-screen image to a laptop so we can get a full-size view of the shot to fine-tune the focus, watch... show more We are having trouble getting "home" shots of art work to get into accurate focus. The Pentax K10-D auto-focus isn't accurate enough. Is there a comparable digital camera that will let us pipe the view-screen image to a laptop so we can get a full-size view of the shot to fine-tune the focus, watch for edge distortion, and the like?
Update: Robert & Jim, thanks for the quick replies. Yes, we've tried manual focus: the view screen isn't large enough to give us the resolution we need to get pixel-perfect shots. We're not using the kit lens: we're using a zoom lens to back off to 15-20 feet and then make the painting (no more than 5' square) fill the... show more Robert & Jim, thanks for the quick replies. Yes, we've tried manual focus: the view screen isn't large enough to give us the resolution we need to get pixel-perfect shots. We're not using the kit lens: we're using a zoom lens to back off to 15-20 feet and then make the painting (no more than 5' square) fill the screen. We seem to have licked the lighting problems, and we still have some trouble with edge effects (distortion and fade-out), but the focus problem is the one we *need* to solve in the long run. When we can't get a perfectly sharp image, there's no sense in entering the shot in a juried competition. We've even been to a professional art photographer (one of two top-level guys in our area), and he had the same issue -- and fumbled the lighting, to boot.
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