Yup... they have no problems with that... just save in JPG or TIFF (I suggest JPG cos you only have 20MB of space). Oh... and since you are already in photoshop... do crop to 3:2 ratio for them... they do sometimes blindly crop and heads get chopped off.
sorry.. me new to ps... what is the rectangular marquee? what does it look like?
i use the crop tool... but i think that it's quite stupid......
i mean... i specify my pixel resolution, but the box can scale... which means it is using digital enlarging or reduction.... how do I make it crop to a size without it being so smart?