Installing Dual Monitor blind

[vayu]

I have a laptop still running Dapper with no output on the primary screen. I had set it up working on dual monitors before the screen burnt out. I think there was an fglrx utility that helped me do it but I don't remember. The way it works now is when I power it on, I see nothing on either the laptop screen or the external monitor until it gets to the login screen which pops up on the external monitor (actually the first thing is I see the cursor when xserver starts).

I really want to upgrade it to 9.04 or 9.10. But how? I can't even see the bios to set it to boot from CD.