Hi Fred and Tracie,
if all you need is the plug adapter (not the transformer) then there are "travel kits" out there that I've seen that have all of the different types of plugs found around the world. (Radio shack? --> memory's failing me)
as for the MP setting on the camera? a couple of variables to consider...
the higher the MegaPixel setting, the fewer pictures you can store on the memory card in your camera, but the lower the MegaPixel setting, the less quality of information in the picture there is for later editing/manipulation.
I have a 3.1 MP digital camera, and I have it set to the 3MP setting, and on a 128Mb memory card, I'm getting about 104 pictures. Setting it to 1MP I can get about 450 Pictures on a 128Mb Memory card.
I prefer the higher MP setting myself and the price of the memory cards isn't that bad to get an extra one.
Hope that helps.