fitting a freeview box

SKODA SUPERB 2004

I have bought a motorised dvd/radio for my superb which i have fitted, now I want too fit a digital freeview box, my dilemna is

were do I place the box

1, in the glove box

2, under the dash

3, how you get the aeriel wired

if in dash how do I get wires through and if under dash howe too get dash off

thanks in advancetommy