Actually quite simple if one knows how to do it
What you have to do is:
1) Go to "Customise"
2) Choose "Settings"
3) Choose "Gameplay Assistance Settings"
>>>>>>>>> Control Device = Choose "Keyboard Only"
4) Go Back
5) Choose "Contoller Settings"
(Here you have two selection Options - "Classic" or "Alternate", if you change a setting in one of em -> FIFA will save this in new given name)
>>>> Select "Alternate"
>>>> Now you have the possibility to play with the arrow keys for run direction
>>>> For other keys choose them you prefer
My Control Settings are:
> Throu Ball = F
> Lob Pass / Cross / Header/ = A
> Shoot / Volley / Header = D
> Short Pass / Header = S
> Player Run / Modifier = Q
> Finesse Shot Modifier = Shift Left
> Pace Control = Space
> Sprint = W
> Move Up (Left Joypad-Stick)= Up Arrow
> Move Down (Left Joypad-Stick) = Down Arrow
> Move Left (Left Joypad-Stick)= Left Arrow
> Move Right (Left Joypad-Stick)= Right Arrow
> Switch from GK = T
> Tactics = B
> Mentality = M
> Custum Taticts = ,
> Mentality = N
> Move Up (Right Joypad-Stick) = E
> Move Down (Right Joypad-Stick) = V
> Move Left (Right Joypad-Stick) = X
> Move Right (Right Joypad-Stick) = C