help with X for dual head

Hi lists, I have a compaq laptop armada v300 with debian sarge, and I'm wanted to work with dual head and Xinerama. The configuration of XFree is perfect with Xinerama but I don't know why is not funtionality? my XF86Config-4 see in http://uvirtual.ean.edu.co/~derodriguez/XF86Config-4 any idea

help with X for dual head

Hi lists, I have a compaq laptop armada v300 with debian sarge, and I'm wanted to work with dual head and Xinerama. The configuration of XFree is perfect with Xinerama but I don't know why is not funtionality? my XF86Config-4 see in http://uvirtual.ean.edu.co/~derodriguez/XF86Config-4 any idea