just bought a 07 plate octy vrs  tfsi.how do I tell what make of sat nav is fitted as nothing is on it ie,make?Got no sat nav cd with it so any ideas please.

If you post a photo (or a link to one) that might be a good start.  And welcome to the forums!

cheers buddy.went to progress Northampton ystrday to get my air con checked ,thank god it only needed regassing!!!!! also asked them the bout the sat nav and its a Columbus,so all I need now is good ole ebay to fing suitable disc.

If it's a Columbus then it shouldn't need a nav disc. The maps are loaded onto the hard drive. So if no maps available then something is wrong. Take a quick pic and post it up.