How do I find out the version of the software I am using?

For the programs DDAdd , DDRemote , DDLook , DDChange , DDNet you can click "Help | About" from the menu.

Alternatively for all these programs, setupdrv .exe and dd32.dll you can look at the file using "My Computer", right click and view Properties | Version.

The version information for setupdrv is independent of the other programs.

There is no way to find out version information from the object modules. You can look at the exact size of the files and compare them to the files installed on your computer.