Hi guys, I'm not really what u might call a computer guy so i was hoping you could help me with this. I run a hockey organization in Buffalo, NY and we are selling advertising space at our games this season. One thing we are selling is space on a rotating projection screen behind our bench. My plan was to sell 5 second spots to local businesses and have their logo projected onto the screen. I have a mac book and im sure it has some sort of slide show feature. I sold a spot yesterday and they asked me what format/resolution the picture they should send me. I have no clue. What should i tell them so that a. the picture looks decent on screen ie. not stretched or hazy and b. so that I can figure out how to add this file to a slide show. Any help would be greatly appreciated. Thanks in advance!