Photoshop Batch Process

I know that you can do batch process stuff in photoshop cs but I have no idea how. I have like 50 images of different sizes that I want to give all the same width and their heights should be proportional. And I’d like to name all the images 1, 2, 3, etc.

Can anyone tell me how to do this, it’s really important that I get it done soon.

Thanks :slight_smile: