Problem to compile marlin.dpe

Hello dear solidoodlers!

My name is Guillaume, I just received my Solidoodle2 et tried a few prints. Now I want to calibrate my printer to get better result.
I'm trying to uplaod the last version of Marlin to my solidoodle2 after having modified the line for the extruder calibration
When i click on compile I get the following error :
C:\Documents and Settings\Administrateur\Mes documents\arduino-1.0.1-windows\arduino-1.0.1\libraries\LiquidCrystal\LiquidCrystal.cpp: In member function 'void LiquidCrystal::write8bits(uint8_t)':
C:\Documents and Settings\Administrateur\Mes documents\arduino-1.0.1-windows\arduino-1.0.1\libraries\LiquidCrystal\LiquidCrystal.cpp:305: error: 'OUTPUT' was not declared in this scope
C:\Documents and Settings\Administrateur\Mes documents\arduino-1.0.1-windows\arduino-1.0.1\libraries\LiquidCrystal\LiquidCrystal.cpp:305: error: 'pinMode' was not declared in this scope
C:\Documents and Settings\Administrateur\Mes documents\arduino-1.0.1-windows\arduino-1.0.1\libraries\LiquidCrystal\LiquidCrystal.cpp:306: error: 'digitalWrite' was not declared in this scope

I'm a total noob in programming so this sounds like chinese to me.

Could someone please help me with that?

Thank you in advance!

-
Gui