Before I found autonerdz and purchased my Pico accordingly, I had inquired with Aeswave on the overlay software. Nearly a year ago it seems.
I got this reply last week:

Hello.

TDC software is no longer available do to a POTENTIAL patent infringement issue. However, the software has been replaced by an updated version with many new and improved features.

The old software was available exclusively through AESWave. Thanks to their co-operation, and the great relationship I have with them, I have been given the email addresses of individuals who have inquired about TDC. Until all of the logistics issues are worked out, AES has allowed me to contact you regarding the new software.

If you are interested in the new software, please check out the links provided below. If not, or you received this email by mistake, I apologize. And I will not save or use your email address again.

For interested individuals: The new software is called ETO: Event Timing Overlays. You can find information about it on my site: www.driveabilityguys.com .  Click on the software tab. If you scroll down you will find a link to ordering information. This is where you can order ETO for the time being.

I would like to thank AES for many years of service. And I plan on continuing purchasing my diagnostic equipment from them. Their personal service is outstanding. I would like to ask each one of you to consider use AES for your needs if at all possible. You will not be disappointed. www.aeswave.com

If you find my software useful, you may also be interested in DECS. It is another software application that performs lambda calculations, in depth volumetric efficiency (VE) calculations and more. DECS is available exclusively through AES. http://www.aeswave.com/cart.php?m=search_results&headerSearch=Y&search=decs

Thank you for your interest. If you have any questions, please feel free to email me.

Scott Shotton
THE DRIVEABILITY GUYS
[email protected]
www.driveabilityguys.com

Does this mean I get to trade in my old TDC software for the new one?   :)

I guess it's a good thing Rod made all his programs available to us, eh.