An update to the Loligo Tether application, which I have only tested so far with a Nikon D50 on Vista, but in theory it should work for other cameras on other operating systems.  It requires that the camera is set to shoot in Raw+Jpg (it will delete the Jpg off the camera when it grabs it onto the pc for preview)  it also requires that you have the camera in "P" usb mode, not "M".  if you change this setting on your camera, you'll likely have to turn the camera off, unplug from the computer, then plug back in and turn on.  do this before starting the Loligo Tether.

Here is a screenshot of what it currently looks like: 

 
as you can see, i've tinkered a bit, it has the preview window, and thumbnails of anything that has been synced over (or in the directory previously)
 
it is more stable, and cope with you turning the camera on and off etc whilst running, it will notice you've unplugged it.  
You can now select the location the images will be saved too.
and general bug fixing/tidying.
 
from the screenshot you can see that I did a time lapse, this was with a 30 second interval.  I could make it into a movie, but I didn't leave it going long enough to get the whole cube to melt, and was impatient heh.
 
I've still not created an installer for this application, it is provided as is, and you take it upon yourself to try it of your own free will, and I won't be held responsible for any loss of photos, equipment, time, space etc..
 
You will need to have the .net 3.5 Runtimes installed in order to run this application too.
 
Download Loligo Tether here:
 
and don't forget to have fun :)  
 
if you find any problems, or can think of any ways to improve it, don't hesitate to contact me, either by posting a comment, or emailing me at Mark@loligo.co.uk.
 
Cheers :)