Border in PS

How do I create a nice border around an image in Photoshop and automate it to actually create borders on a group of images in a folder?

Thanks.

They are call "Photo Frames"
There are plugins and ATN"s available for creating various styles of frames.
http://www.ononesoftwa​re.com/products/photof​rame-free/

However to do it yourself you can increase the canvas size which will give you a basic frame around the picture. If you want to make a drop shadow there is a little more involved. For that you will have to select the picture and make a new layer via copy, and then with Layer Styles select Drop shadow and adjust it to taste.

Here is a nice little tutorial. Learn how to do this and you can figure out more frame ideas on your own from there.
http://www.photos-of-the-year.com/articles/fram​e/

Thank you. Photo Frame add-on works great.