Nikon Capture download speed

Hi, everybody!

I am using a D70 and hoped to get some kind of live-review of the
images taken on an attached laptop. To my dismay I had to find that
when I take a shot (either on camera or via capture) it takes capture
3s to find out there's something new and further 2 to 7 seconds (basic
to raw) to get the data. Showing still takes it's time, so we end up
at 12seconds with the image viewing.

This seems to be quite independent of the system, tried on several PCs
and Laptops from USB1.1 P3@600MHz to USB2.0 P-@1800MHz.

Nikon support told me D70 only transmits at 12mbit/sec, while D2X
pushes at 480mbit/sec. With 12mbit a 5MB raw image should take
(8*5)/12=3.3seconds to transmit, 1MB basic quality jpg 0.8s. But 12
seconds differs still widely from 3.3seconds.

Has anyone of you out there experienced different times? I hoped to
get myself a laptop and use it as enhanced control in- and outdoors,
but with such long durations it's not that attractive to me (taking
into concern the weight of a laptop :-)).

Any data or opinions?

Thank you.
Claus