I would go to an on-line printer 1st over using Kinkos.  Try www.Mpix.com.  I like their metalic paper - makes the colors look really sharp.  Prices are good too.  There are tons of other on-line digital print shops.  I found Mpix through a photography magazine. 

If you are going for print, render your image between 200 and 300 dpi (more is better).  For example, you want the print to be 8x10, then render 1600x 2000 minimum.  In your photo editor program, resize the print to 8x10x200 dpi and save as a tiff image.  That is the image you should send to the printer.

Peggy

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