Hi, I've finally managed to install Ubuntu on my Vaio VGX-TP1E using the Alternative install CD. The problem is that the installer is using some video mode that my monitor (TV) can't handle. If I boot the system and select the rescue mode I can log into the installed Ubuntu 8.04 installation but how do I configure the X server to change the video mode?

I've tried:

dpkg-reconfigure xserver-xorg

But this seems to only allow me to re-configure the keyboard?