To map a pad button to the keyboard using x360ce you'll need to modify the .ini files yourself and copy the .dll to the target application root directory. My ds3 is broken so I can't test that, so if you can't figure it out yourself, then Pinnacle Game Profiler sounds like your best bet.
By the way, why can't you use scpserver profile manager?
By the way, why can't you use scpserver profile manager?