Snow leopard (or leopard) support on HP Elitebook 8730w.

[bromogatos309]

Hello everyone ! Hackintosh newbie here ! I'm interested in installing mac os x snow leopard (or leopard , depending on compatibility) on my HP elitebook 8730w. I just had it laying around and thought it would be a fan thing to do. However after following onecore's guide , and after inserting the usb in my laptop it just boots into windows 7 instead of the installation media (and yes I selected the USB as the bootable device). I Don't know what to do. I'm all out of ideas. Could someone help me with the installation process ?

Specs :
Core 2 duo t9550
mobility radeon 3670
2gb ram ddr2
320gb SATA II HDD