Como instalar o PHPUnit

Estou tentando instalar o PHPUnit, eu uso o pacote easyphp.

quando executo o go.pear.bat recebo o erro abaixo, como faço contornar este erro, onde eu altero o esse include_path?

WARNING! The include_path defined in the currently used php.ini does not contain the PEAR PHP directory you just specified:
<C:\Program files\EasyPHP5.3.0\php\pear>
If the specified directory is also not in the include_path used by your scripts, you will have problems getting any PEAR packges working.

Current inclued path : .;C;php5\pear
Configured directory : C:\Program Files\EasyPHP5.3.0\php\pear