Xserver - Touchscreen

[balakrishnan]

Hi,
   I am building "stable/2009" angstrom-distro branch in open embedded.
What is my problem is I am not able to enable 'touch screen'. I have
added "touchscreen" value in MACHINE_FEATURES variable also.
My configuration details is

PREFERRED_PROVIDER_virtual/xserver = "xserver-xorg"
XSERVER = "xserver-xorg \
           xf86-input-evdev \
           xf86-input-mouse \
           xf86-video-fbdev \
           xf86-input-keyboard"
MACHINE_FEATURES = "kernel26 usbgadget usbhost vfat alsa touchscreen"

1.How to enable touch screen in "xserver-xorg" configuration?.
2.whether it is possible in xserver-kdrive?

With Regards
J.Balakrishnan