How difficult is it to extend the LCD monitor to motherboard cable on an Asus Eee PC 701?

It is the cable in the upper right of this image:

Borrowed from

It looks to me to be more of a round cable, which IMO should be somewhat easier to splice and solder than a flat ribbon.

What kind of cable should I use to make the connection? I've read that Cat5 might work.

Or is this a standardized connection that I can buy a pre-made extension for?

The reason I'm asking is that I'm no longer sure that my Eee PC will fit perpendicular behind the dash into a double din slot as originally planned.