Here's my problem. A friend, who does a lot of photography (uses PS), uses Mpix for his picture printing-mainly larger wall pictures. Anyway, I was trying to upload one of my pictures for a 20x30 picture and the dimensions of the jpeg are 2376x1584. For a 20x30 it needs to be 2000x3000. So how do I change that? If there is another more Aperture-friendly printing site, I willing to give it a try. Thanks in advance. EDIT: I did an MRoogle search and found a thread talking about A2 but it did not appear to be exactly waht my situation is.