The fact that you can't get a retail DVD is a problem. Could you download it -you know from where-, convert it to a read/write dmg and delete languages, printers, etc, etc, and then burn it to a single layer DVD? You wil need a mac to do this (you can always do it in an Apple store) or a bootable install of OS X on your machine, following the steps I gave you should get you there. I think it's a real waste to use iAtkos or iDeneb when you could be running retail, it's so much better. I don't know if installing any one of those without selecting anything except the base system will do the trick, but try it.