OK, now do what i said to do before:

Ok, setp 1:
unplug ps3 from computer;
step 2:
start motionjoy;
step 3:
plug ps3 on computer.
step 4:
On the top you should see "home, local, help".
Click Home.
step 5:
wait until it detects the ps3 is connected to the pc via usb.

Tell me when it detected or if it isnt detecting,