xo... why don't you just use the txt editors search and replace on ".bum" to ".jpg."? then it won't hit the bump_strenth and whatnots. p4 can load jpgs or greyscale whatevers into the bump channel if you change the cr2/pz2 files to do that. they don't work exactly the same as the bum files, but they usually give okay results. if your figure comes out with weird black soot all over him/her, then you need to use the bums, not the jpgs. :)