Strangely I have no idea why you are worried and wired comm without knowing the steps leading up to it?
If you read through the forums and see what other people are using and have done you will understand.
At this point you have not stated what motherboard you have
You haven't stated your intentions, you want to add Coolrunner or just require the DVD key, this will make a difference which approach you take depending on the dashboard you are one. So since you are asking about DGX yes it will give you the CPU key to get your DVD key.
You will need to read and write your nand, again this depends on which motherboad you have.
After all that you can scan ip or use monitor comm.