Disklavier

I have a Mark III (model DBG1CD) piano that I have enjoyed for a couple years. Now I am attempting to connect it to my laptop so I can use an online piano course my piano teacher recommended. www.PianoMarvel.com

I bought a USB to MIDI cable. http://www.amazon.com/gp/product/B0017H4EBG/ref=ox_ya_oh_product

I've successfully connected the laptop and to another electronic keyboard and can use my piano tutorial software just fine.

When using the same laptop, cable and software I can't get any keyboard strikes on my Mark III to register with on the PC. 

I've connected both midi cables (out to in and in to out as required). I also went through the manual and set the Yamaha menus to:
  Midi Setup
  Remote Out
  On 

Still no response from the PC. My local dealer referred me to Yamaha support.

Am I missing something? 

Frustrated in Denver

I did discover my flash rom is not current. I have CTRL V5.01 installed vs the update I found online. I'm skeptical that the update will resolve something so fundamental. 
      
This updates the flash ROM in the following 
          systems to the following versions: 
    CTRL V5.02, KEY V1.05, and DSP V1.26