Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
celebrian23 said:
Can I use iphoto to convert photos and resize them? How?

Once the photo is in iPhoto, the Export Photo option from the menu lets you pick the file format and pixel size of the picture and save a copy with those characteristics in a location of your choice.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.