He wants to say that besides of restoring Snow Leopard image on usb pendrive, you also need to install bootloader on it. Everything must be done under MAC OS X's Disk Utility. Remember that it's not all about creating a HFS+ partition but also about some boot files that are created within restored image (what can be done only under osx). So:

Get a VMware Workstation, google a tutorial on how to install osx out there, then find a good tutorial (where all chameleon and extra stuff is mentioned) on how to create a bootable usb stick with Snow Leopard.

uwannacookie couldn't do it this way since his CPU isn't compatible with virtualization.