I think you have to use the "Exchange Window" of the ClassPad Manager. (right mouse click on the screen of CPM -> exchange window )
Your CP must be in the mode where you can send (communication, USB cable).
Now you can send your CP files per drag and drop to an PC image.
I think you couldn't save it as TXT.Realize you can embed data from different CP apps in the same eActivity file.
Maybe an XML-based file would be more appropiate... i don't know...