It sounds like he's trying to reflash his modchip/tsop through ftp or http so he doesn't have to burn a CD.
kikelloco, are you already modded? If so, are you running Evox? If you are, ftp into your Xbox with flashfxp , ftp a bios file (Xecuter 4981 should be fine) to C:\bios, and call it bios.bin
Then hit ctrl+r. A window saying "Raw Command should open". Type
CODE
flashbios C:\bios\bios.bin
and evox should reflash your bios. I'm believe Evox resizes the bios automatically, so I don't think you have to worry about that.
This is all assuming of course your modchip/tsop has been write enabled, and that you're already modded.