Photoshop HELP..

ok...I have PS CS2 and am wondering if there is a way for me to open MULTIPLE photos and then resize them all at once? I am working on a big project for our deployment and need to size numerous photos to 5x7...also, what would the resolution be to make it good enough for printing up to 8x10? I always save my photos at a 300 dpi resolution and not sure if that is neccessary! any help would be gretaly appreciated!

Hmmm... can you batch resize a bunch of photos if the originals are not in that same aspect ratio? I would assume you're going to have to crop them... but I dunno.