Okay, Apple is going to use TPM chips to secure its OS X software so it cannot be run on competing vendors' computers (or DIY boxes). What I don't understand is, couldn't you just buy a mobo with the correct TPM chip, and then run OS X on a DIY box? They already sell the same MOBOs from the development kits, the 915g chipset intel ones, on the internet for 100$. Am I wrong or couldn't you just obtain the correct parts independantly and build it yourself. I've already found vendors who sell procs and mobos for PPC boxes. There has to be something I'm missing.