Include path on Windows XP of library files.

I've been trying to include "MakeBlock.h" in a simple test project for the MakeBlock Orion.

The compiler complains that it cannot find "MakeBlock.h"

So far I've tried it in

C:\Documents and Settings\Proprietario\Documenti\Arduino\Libraries\MakeBlock
C:\Programmi\Arduino\arduino-0017\hardware\libraries\MakeBlock
C:\Programmi\Arduino\arduino-0022\libraries\MakeBlock
C:\Programmi\Arduino\hardware\arduino\avr\libraries\MakeBlock
C:\Programmi\Arduino\libraries\MakeBlock

and the IDE cannot find it.

Is there a setting in the IDE I don't know about...?

Oops, this should have gone into software, sorry!