It sounds like you have everything you need to get your box up and going to do all the things you want it too. I'm assuming you have the x-chip evox BIOS downloaded since you knew you needed BIOS other then the cromwell that was shipped on the chip. What you are gonna do is connect your x-chip to your comp via the usb and run X-control, then you choose file>load raw. You will choose full.bin, unless you have a 1.6 xbox. Then if you want to use any other BIOS on your chip this is the time to load them onto the chip. Then just hit write. After that your chip will be ready to read that unsigned slayers disc. It's really easy to use, just choose the install option and it will do everything for you. You might want to update some of the files because they are outdated, but will still work fine. Hopefully this will help you out, let me know.