Cedega configuration options are located in the '.transgaming' directory found in your home directory. The main configuration file is '.transgaming/config'. This is an ASCII text file. The first time you run Cedega, the '.transgaming' directory will be automatically created for you, in a default preconfigured state. The default preconfigured state is copied from the /usr/lib/transgaming_cedega/.transgaming directory.
To edit the Cedega configuration settings open '~/.transgaming/config' in your favorite text editor.
in there is a joystick Section
This section contains the configuration for how joysticks should be treated under Cedega.
"Logitech Inc. WingMan RumblePad" = "X,Y,slider,Z,RZ,hat,none"
Controls the configuration of the function of joystick axes. The joystick name and axis functions can be determined with the program 'jstest'. The available axis types are: "none", "X", "Y", "Z", "RX", "RY", "RZ", "slider", "hat", "POV", and "ball" "hat" and "POV" are synonymous. Hats use two axes. The name on the left should correspond to that reported by the actual joystick installed.
for more info see:
http://digital-conquest.ath.cx/wiki/...e_Using_Cedega