Hello.
Please note that I am incompetent and for now couldn't come up with better solution.
First, open up pad.txt.

From there you will find 7 values.
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1st value is binary on and off. 1 or 0. This decides whetever the pad is in use or not. 1 is on, 0 is off. 
2nd value is the pad number. Set this to 0. If you experience problems with pad ( no response within the game ), set it to 1, 2... etc. Test values.
3rd value is sensitivity of axis. Default is 30 and value range is [0,100] ( 0 = the most sensitive 100 = most sensitive ). Extreme values should be avoided.
4th value is the shooting button. For all buttons, use values 0-32. 
5th value is the bomb-button.
6th value is the focus-button.
7th balue is the pause-button.
8th value is binary on and off. 1 or 0. This decides if POV axis ( 360 degree ) is used instead of X/Y-axes. 1 is on, 0 is off. 
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## Please put only numbers inside the file. Non-numerical characters can/will cause problems. ##

Some correspondances to Xbox-pad:
-----------------------------------
0 - A
1 - B
2 - Y
3 - X
4 - L
5 - R
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etc...
I recommend trying out what feels the most comfortable. If despite everything the setup doesn't work, try out Joy2Key or 
similar programs. 

