I'm the proud owner of an interupt routine in a PIC 16F628, my very first. It handles USART RX from a PIC 18F4550 wonderfully.

As mentionned on Darrel's information, I had to switch from MP to MPASM and encountered some delays in setting up the _CONFIG switches properly. But once I got that cleaned up I was up and running, this is just awesome!

(Charles, any chance you are using MP?)

Robert