Check out "Nikon Camera Control Pro"
From here.
I use Nikon Camera Control Pro and a D200 with a WT-3a wireless transmitter. The image comes up full screen on my Mac Book Pro. This software gives you full control of the D200 from the notebook. You can also use a Cat 5 or USB cable. The photo is not saved to the CF card but saved directly to the Mac. I'm sure Canon has something similar.