The Digital Wrench Software is installed, but I don't know what Serial Number was used to install it.
The Software Serial Number was included in the original Digital Wrench Kit you received. This is the kit that came with a CD, Manual and the Vehicle Interface Cable in one box. Depending on when you received this kit, the Serial Number was either on a "Serial Number Card" or on a label attached to the CD Sleeve.
If you do not currently have Digital Wrench installed on your PC, refer to the article "How do I Get a Serial Number?" for more information.
If you currently have Digital Wrench Version 2.06 or higher installed, the Serial Number is displayed on the System Configuration Screen, (click the "wrench" button).
If you currently have Digital Wrench Version 2.05 or lower installed, you can run the serial number finder utility on the Digital Wrench CD.
To run the utility select Run on the Start Menu, then type:
D:\Utilities\Serial Number Finder\SerialNums.exe
where 'D' is your CD drive letter on your computer.
This will bring up a window that looks like this:
Click on the "Find my Serial Numbers!" button, and it will display any serial number(s) you are using with the Digital Wrench software. Keep your serial number(s) in a SAFE PLACE. You will need your serial number(s) each time you install the software.