How Can I Convert 3:4 Photos to 2:3 Photos?


I have several thousand photos that were taken with a digital camera set to take photos with a 3:4 ratio. When I try to print them, they get cut off. I've found that if I resize, copy, then paste to a 4x6 blank photoshop file, and save it as a jpeg, they print just fine (with some extra white space on the ends). This process takes 45-60 seconds per picture. I would dearly love to find a way to change ALL my photos (or at least all the landscape ones, then all the portrait ones) in somewhat less time. Any suggestions would be welcome.

Thank you,