I've been working on this all day. I don't know if it's my chipset or my lack of knowledge of either the computer or xbox part.
Alright I tried using iPrep (because it looked a lot easier than DosFlash) but when I chose the COM Port, there's no option. Here's what I mean:

I've used the SATA cable that was previously in my main CD drive for the PC and just disconnected it and hooked it up to the BenQ drive. There's only one other thing on my PC that uses a SATA cable and it's for my hard drive.
Once I reboot and boot from my flash drive to get the iPrep thing running, it gets stuck on the first step, it goes Status: 0xFF and even after I power cycle, it still doesn't run.
I tried using DosFlash but I'm too computer illiterate to try it more.
Actually, I don't even know if I have a BenQ, I just read on my drive that it says Phillips & Lite-On.
If anyone could help, it's very much appreciated. Thanks.