1. hook the cable to a PC (the parallel port, the larger end).
2. hook the rj45 to the port on the xbox.
3. plug the power to the xbox but DO NOT turn it on.
4. installed nandpro2.0 (any version...A,B,C,D,E) to the c drive ie: c:nandpro20B
5. install the driver port that comes with nandpro
6. use DOS to navigate to nandpro ie: cd c:nandpro20B
7. run a test by typing this: nandpro lpt: -r16 test.bin 1 1
8. that should have made a test file in the nandpro20 folder.
9. If the test worked then do this to install xell to the xbox:

put the xell file in the nandpro20 folder.

Type this in dos:

nandpro lpt: -w16 xell.bin 0


Once it is done writing unplug the xbox power cable for 30 sec. Hook the xbox back to tv and boot it and you should see xell running.

If this helps, please hit the Thanks Button!