My parents are celebrating their 40th wedding anniversity. I am trying to put together a photo slide show to be presented on a projector. I have hundreds of old 4x6's and 3x5's that i am going to scan for the slide show. I just went out and bought an Epson Perfection 4490 Photo scanner. I plan on creating the slide show on Roxio Easy Media Creator 7 and burning it to a DVD. I am then going to play it on a laptop, through the projector. The projector is nothing special and i'm not sure of the specs. We use it at work for power point presentations. My main question is: In order to keep the pictures from being blurry when the are projected, what DPI/resolution should I scan them at? Any help would be greatly appreciated. Thank you in advance!!