It would not be hard to have a small LCD screen with a few buttons that would read the information from the controller.
I had thought about adding USB to the controller instead of serial, but it makes it harder to interface the controller with external hardware devices such as the LCD terminal that is wanted...
For USB, I have a good reliable USB to Serial adaptor that I use for everything. It work with my Mac, it works in the virtual machine on my mac.. Its Great!
I cant remember what model it is right now, but I will get it for tomorrow.
It was only like $28 bucks I believe. Very well worth the money.
-Adam