Batch process? Rotate 90°, save and close multiple files?

There has to be a better way to do this.

Every year, I take over 1,000 portraits. Each photo has to be rotated 90° counter-clockwise, saved, and closed. It's boring, tedious, and time-wasting.

Is there an easier way to do this? A macro would only be able to rotate and save one picture, correct?

Any suggestions are welcomed!

EDIT:

Gotta love Google. Found a free application called ImBatch that does exactly what I wanted, plus a whole lot more if I ever need it. Very easy to use.

Regardless, if there remains a better or smarter way to manage what I described above, please tell me! THANKS!!!!