what connection lead do i need to buy?

I have the columbus dvd unit in my new superb,

Its has aux input in the center storage box, but doesn't have any other input any where else,or, glove box, etc

Is there a lead I can buy, so I can add my dvb tuner i have from my last car?

Is there an output vga lead I can but to add my rear screens to the columbus as well?

ie, vga input lead, and vga output lead.

Thanks in advance

Derek