I have recently bought my first mac. my 11"air is great. However I am not familiar with any of the programs. I need to print a 4x4 picture on a 4x6 picture paper on a hp photosmart. When I had a PC I was unable to do this with the systems photo programs and had to buy elements in order to make the print work. Does the iphoto program allow for such changes or do I need to purchase a different program?