You can also use my Rescue Disc, found in the 'usual places' (a.k.a XBINS) under this directory:
/XBOX/Console Based Applications/apps/utilities/Frostys XBOX Rescue Disc/
Extract the RAR, and burn the image file to a DVD, then boot the DVD on your XBOX and you will be able to make the changes with either the included file manager, or you can just FTP into your XBOX and do it that way.
