I understand some of the code, not all of it.
as I mentioned, I don't know the assembly side of things so that is why I am asking what changes are required to program it on a 16F877.

I did not know I had to fully understand every bit
of her code to post a question that would result in a
helpful answer or one that I could learn from.

darn, what happened to if you don't understand something, just ask?