Please, please, please take your photos at the highest resolution possible. Let me tell you why.
Let's say you have the settings for 1.2 mega pixels. While this is enough data to fill a 3x5 print, is assumes you are not going to crop at all. Once you crop the picture, you must depend on the software or the printer driver to "guess" at what goes in between. so, you lose all the fine details of your pictures. Plus, let's say you take that "perfect" picture and want to make it an 8x10 (which a 3.2 megapixel camera can easily do), if you set the resolution below the maximum, what might look fine as a 4x6 now looks grainy as an 8x10.
I think the best way to visualize this is to imagine you have a puzzle. When this puzzle is put together it takes up the size of your dining room table. You think it is great, but think it woudl look awesome as the rug that fills your entire dining room. Now, your goal is to take the puzzle as is (without adding any pieces) and make a rug out of it. Obviously, you will have to make a space in betwen each piece to spread it out and then approximate what the colors, texture, etc. would be in between them.
This is exactly how a picture works, the pieces would be the same as a pixel of information.
I say spend a couple of hundred dollars (you would spend this on film for just the 1 trip anyway) and buy 2 256 meg memory sticks. Here is a link to the product
http://www.ecost.com/ecost/shop/detail.asp?dpno=140089
You may have to copy and paste the link. Take your pictures at the highest setting (3.2 megapixel and fine mode). I promise you will not be disappointed.
Dizneykev