Here goes nothin.
The mod chip I used was the Xenium chip....so you could switch up to 4 banks of bios's from the software, or use the Microsoft Bios (so you can still play Xbox Live). Most chips don't allow this. One you solder up the chip (not an easy task by any means....EVERY small board to solder, d0 wire is even smaller), you have to flash the bios using a boot disc. These are kinda difficult to make...you have to use a bunch of dummy files, you have to edit the bios yourself, you have to burn it to a cd-rw a certain way, or else it all screws up.
Anyways...once you flash the bios, you have to boot up the dashboard (gui). Once you boot that from the disc (again, hard to get to work, the xbox dvd player doesn't like reading anything), you have to FTP to the xbox using a patch cable to your computer. Once you ftp, you can install teh GUI to the hard drive on the Xbox, and go from there.
I would suggest installing a larger hard drive before installing the GUI, since the HD that comes with the Xbox is 8gig....which won't hold much. I have a 120gig that I'm already thinking of upgrading.
Once the GUI is installed, you can FTP to the box whenever you want, and send more programs/media/whatever to the box.
For more info, email me at PontiacGT2K@yahoo.com
or AIM me at stric9maharishi
or check out
www.xbox-scene.com for a LOT of useful info.
If everything I just said was incredibly over your head, you can send me your xbox and I'll install it all for you. Contact me for details.