Yes, this *WILL* be part of a much bigger program!

I made some changes -

I cleared INTCON.1 before I re-enabled it in the
Donebyte routine

Code:
Donebyte      
      movff _rcv_byte,_rcv_buffer
      movff _rcv_buffer,PORTD  ; this is a debug, just to see rec'd byte on LEDS
      bcf  PIR3,3       ; clear the int flag
      bcf INTCON,1
      bsf INTCON,4   ; turn on the INT0 interrupt for next byte
      INT_RETURN
But that didn't help. It shouldn't have been set anyway, since I clear it
after I shut off INT0 in the
GetStart section.

I changed the TMR4 reload value to 0x61

I put the variables in BANK0

I made the change recommend by Jerson to take one line out of the setb/clrb
sequence.

Still, when I hit ANY character, all the LEDs on PORTD light up (high).

Something small still isn't right.