Hail all. I apologize for my first post being a call for help, but I am kinda stuck right now..... And now for My Sorry Story: I purchased my MacBook (Q4-2009) from a pawn shop and my OS X Snow Leopard disk from the Mac Store. My DVD got fragged in the engine compartment of my van (please don't ask...."kids" is the answer) and I don't have the disk any more. However, I do have the .dmg I ripped from it for archival backup purposes. I decided to try Windows 7 (I know.....dumb) and now I've had it....I want my OS X back. Here's the crunch: I don't have a dual-layer disk to which to burn my backup image. So I want to use windows 7 on my macbook to write the .dmg of the installer to an 8GB flash stick, from which I may install to my Mac. In short: Use win 7, running on my mac, to create a bootable usb mac osx installer which I can then use to install OS X on said mac. Please help. I'm not sure whether there are any licensing issues here, but I do own a legit license for osx, and it is to be installed on my MacBook. Thank you.