A cake designer friend of mine submitted some digital image files to a UK magazine to be included in their next issue. The magazine replied with a request that the files be submitted in "CMYK jpegs at 300 DPI, and no less than 10cm x 10cm". We're lost! How do we go about saving in CMYK jpegs and making sure that the are at least 10cm x 10cm and 300 DPI? Any suggestions would be appreciated!