Yeah, I was on this last night and think I got the hang of it, so I can share a bit of what I now know.
If you're using Windows and you're not using an SSD (and thus can probably boot into Windows when your motherboard's SATA controller is in IDE mode) then it should be a pretty straightforward experience. You can get it from this post. You probably also need to run a program that signs the driver used to interface with your Lite On and also disables driver signing validation (also in the above post).
If you're like me, and can't boot into Windows in IDE mode and don't have another SATA controller besides the one your boot drive is on that you could put into IDE mode, then you may have to use the command-line version of DosFlash from an MS-DOS boot disk. Originally I was writing up a post on how to do that here, but I figure it's a good idea to make it a separate thread. So stay tuned for that, if the relatively automated, straightforward Windows version doesn't work for you.