This clever little trick is new news to me, sorry if I'm wasting space with something everyone already knows about.
If you don't already know how to burn the Diecimila bootloader without the AVRISP or similar clone; then you really need to watch this cool demonstration.
the only hardware mod requires placing a 4 pin header in the X3 connector position on the PCB and then making a simple cable.
-=KG2