Nope, nothing special. Here's what I did...
Installed the software according to instructions. I think they say install software first then the install program tells you when to plug in the receiver and then install the batts in the Dpad. After that, the Logitech Profiler program should come up. It asks to create a new profile. I called my Mach 3. Then it asks for the location of the executable for Mach3. there is a browse button and I nav'd to the mach3.exe file.
At this point you should have the icon that looks like a letter 'w' next to the clock in the lower right corner.
Then a screen shows a layout of the controller and all of it's buttons/joysticks. I selected a button (for now let's select button 6-lower right corner) and a menu pops up. I clicked on select assignment and then 'new command'. Type the name of the command in the box (i.e. "Z axis Down"). Click the Record button. Press the Page Down key on the keyboard and then release the page down key. Click the stop button. Now that command (page down) should be assigned to that button.
So, if it still isn't working, here are some questions. Is your computer recognizing the receiver plugged into the USB port (look under device manager-> Human Interface devices- you should see some Logitech stuff there.) Is the receiver flashing its light? Is the receiver receiving the signal from the Dpad? ( Control Panel-> Hardware-> Game Controlers->there is a test button where you can push buttons on the Dpad and it should show you the button being pushed on the screen).
Hmmm, that's about all I can think of right now- I'll keep thinkin about it. I checked for config info on my puter but can't really find anything/setting of value anywhere- it all seems so generic and I didn't have to tweak any of the setup, it just did it all for me on install. Maybe the Nerds at Logitect tech support might have a clue? HTH
Regards,
Sid
P.S. Where are you located?