[ubuntu-in] display using overhead projector

[kartik]

I have a Dell Vostro A860, running Ubuntu Karmic with Intel Mobile
GM965/GL960 Integrated Graphics Controller. I want to use my laptop for
projecting my presentations etc through an LCD projector. However I
could not configure the projector using display settings in panel. I use
 the Fn+F8 key after connecting the projector but there is no display in
the projector though my laptop monitor resolution changes. How to fix
this? 
This is the output on running xrandr: Screen 0: minimum 320 x 200,
current 1360 x 768, maximum 8192 x 8192
VGA1 connected 1360x768+0+0 (normal left inverted right x axis y axis)
0mm x 0mm
   1360x768       59.8* 
   1152x864       60.0  
   1024x768       60.0  
   800x600        60.3  
   640x480        59.9  
LVDS1 connected 1360x768+0+0 (normal left inverted right x axis y axis)
344mm x 193mm
   1366x768       60.1 +
   1360x768       59.8* 
   1024x768       85.0     75.0     70.1     60.0  
   832x624        74.6  
   800x600        85.1     72.2     75.0     60.3     56.2  
   640x480        85.0     72.8     75.0     59.9  
   720x400        85.0  
   640x400        85.1  
   640x350        85.1  
> This is really frustrating because i wanted to show some presentations
and also publisize Ubuntu. Otherwise I am forced to use windows and MS
office in the office computers and covert my Open office to .ppt
thanks in advance
> Kartik