I am delighted that the Chip works. This means that the 18000 is incompatible with the Chip.

DVDRX might be a problem. I've not got it working on my 15000 because I haven't found codes to load for the DVD driver version. Also, the 10000/15000/18000 series will not play PAL DVD videos under any circumstances.

Finally, was my diagram of the connexion points helpful to you?