Poking around over there, I'm beginning to have my doubts regarding how supported the bootloader burning function truly is. I thought it should happen through the IDE - as there's a drop-down for it (Burn Bootloader -- w/USBtinyISP. So maybe it's a different "USBtinyISP" :P) Maybe the "solution" is "just use AVRdude" (No Way). I was hoping Jack C. would have dropped back in to set me right.