get your evox folder, use a program like craxtion or quix to create an xiso of it, then burn that bitch to some kind of blank media (blank dvd or something, although thats a serious waste of space, you may want to put other programs on that to), make sure you finalise the disc. Now on the xbox, stick it in the drive, then just copy the folder over the xbox, or if your making it your main dash, then put the files inside the evox folder into the root of c and point your x3 chip at it.
edit* or get slayers disc, its on that provided you can get it to boot