This is a great idea! I've never used Linux before, but I thought I would try, as I wanted to play Unreal Tournament, which is so much better than Unreal Championship (the XBox version of UT), so my mate downloaded Dyne:bolic (or whatever it's called), but it wouldn't work on my XBox due to my having a Focus chip, so he downloaded Gentoonx, which suffered from the same problem. Eventually, Gentoonx came up with a fix, but you need to connect your XBox to the net for ages (apparently) to install the fix, and I only have a dial up connection (which is why I had to get a mate to download the Linux versions), so I never bothered.
Anyway, if you do put together your own version of Linux, will it have a virtual keyboard, work with the Focus chip and run games (although I realise that there are no 3D card drivers yet for the XBox, so I'll have to use UT in software mode)?
If so, it'll be great.
Also, will it run from CD, like Dyna:bolic, or will it need installing on a hard disc? And will there be any chance of it corrupting anything on the hard disc - I got the impression that Gentoonx could do this (or even affect the BIOS in the mod chip), which is why I first tried the Dyna:bolic disc.
Good luck and thanks.