Okay, you need to dial ##DIAG or ##3424, NOT ##3424#...
DMR should pop up.
The drivers for QPST can be found
HERE, on post #3
I have the exact same phone as you, with Telus and the drivers worked fine for me.
Don't forget to run DMR (on the phone) BEFORE connecting to your computer or Activesync will startup and then it won't work.
You can also look
HERE for a short tutorial with pretty pictures
