Soft mod ???

[eakinsme]

i read that if i do this:
1-Get myself a copy of slayers(2.5 or 2.6 get from usual places i think)burn onto dvd-r
2-Open both xboxes
3-Make sure they both have power connected and connected to tv
4-Place the boxes close together
5-Power on my modded box until evox is on screen(harddrive is unlocked)
6-Power on problem box
7-Get ready as when 'X' logo appears with ms underneath(harddrive is unlocked)
8-Quickly whip out ide cable in prob box and swap with ide cable from modded box
9-Place slayers disc into dvd tray on modded box
10-Select install evox and apps on retail c drive
11-Slayers then copies files to c drive on unmodded box
12-When complete replace ide cables without turning off boxes
13-Reboot newley modded box and hey presto.

it should work! but what i wanna know is if i do this can i do it with any evoX dvd-r then would it be possible to ftp my C: & E: drives over to the other xbox so they are the same?