can a hot folder auto rotate an image?

Of course!  Now, for the million dollar question.... what's the front end?

We want to scan the image to a hot folder

Art,

What kind of hot folder?  I assume you are talking about setting up a hot folder on a desktop that you can scan to or drag and drop files into.  With fiery, it's pretty simple to create and set any parameter that can be used within the print driver. 

Apologies, I'm somewhat naïve when it comes to this. 

The user will scan a document that is 36x60,  we want that document to be rotated at a 90 degree angle for viewing so the user does not have to rotate the image.  I  thought there may be software that could watch a folder, and then automate that process.

next image software by contex can do this on the fly.