These are good questions for Piru, it's his program after all.
I have a BlizzPPC and iirc you need the kickstart rom file in devs:kickstarts/....then you need to modify your startup sequence to call BlizKick early in the boot sequence (there's instructions with the program on how to make the s:startup-sequence modification (e.g. c:Blizkick .....)
I don't know about the jumper, on the MarkIV board that automatically remaps the kickstart on the amiga motherboard into fastram....on the BlizzPPC this is done in software and there's no hardware jumper. My guess would be you leave the jumper off and let the software (BlizKick) do the remapping of the file in devs:kickstarts/ :-)
