I am trying to get a retail version of OSX on my computer. I have 10.5.6 already.

my computer is a toshiba U305-S2808.
Intel Centrino processor
Intel integrated video card (I think a 995)
4gb of ram.

I already tried to use the generic Boot-132. That doesn't work, I did however get a Kalyway 10.5.2 to work, but I was wanting a full retail version. Any ideas?