Overscan? On HDTV used as monitor

[Pete S]

Hi,

I have a 32" HDTV to use as a monitor on my pc, unfortunately the tv 
overscans (when the desktop is too big for the screen). I have framed the 
desktop with toolbars to reduce the overall size of the usable desktop, 
however would like a more elegant solution!

I believe this is possible using custom modelines in my xorg.conf file, 
but have no idea what they should be! Prior to experimenting on my own I 
thought I would ask if anyone else had encountered similar problems, and 
if so how to overcome them!

On xp the graphics card driver (nvidia 6600) has a 'underscan' option but 
I can find nothing similar in Ubuntu? Is this going to be added in Lucid? 
if it is then I will wait for a few days!

Any thoughts?

Thanks in Advance

Pete