I custom designed these on my own and did them on Powerpoint - then saved as JPG's and uploaded to Vistaprint.com.
Ordered 100 postcards (I don't need that many, but that's the minimum), full color front and back, glossy in front only (so that you can write on the back).
Ordered 2/8/07 and they should arrive by 2/15/07 so we'll see how they turn out.