i really screwed up...help?

To start I'm running a hard modded xbox with evox, i cant tell you much more because my brother had it done a while ago. I saw xbmc on a different site and thought it was really cool, so i ftped it over to my box. I started just going to it in the games section but thought i knew what i was doing. i went on windows explorer (how i ftp) and changed the evox.xbe (i think) name to evox(2).xbe and changed xbmc.xbe to evox.xbe. i restarted and it went to the green default xbox screen(before it was modded). What do i do?
What i did:
burned xbmc to disc hoping to boot from it->the disc is dirty or damaged
i think i posted this in the right place thanks A LOT in advance