Ok thanks for that any other things I should be aware of??
You will need to buy some stuff if you want to perform the RGH.
Your shopping list goes like this:
1) NAND writer (either a cheap USB NAND writer in case you have a 16MB NAND, or if you have a 4GB system, you can wire up a SD card adapter)
2) CPU Post Fix adapter
3) Glitch Chip
4) (Optional) Dual NAND PCB*
5) (Optional) LTU2 Drive PCB**
*In case you want to use XB Live with a clean slate
**In case you want to flash the DVD drive