Sat nav disk

I have just picked up my first range rover rd6 on a 52 plate. I need a bit of advice, their was no Sat nav disk with car, could I get an up dated disk for Sat nav for the original 52 plate Sat nav system.
Also the driver,s side seat control cover has been damaged, can you get replacement.
I'd would appreciate any good advice, thanks

Er.. WELCOME! (first post should have been in the Introduction section ) Anyway, what satnav system is it? Reason I ask is my 2001 Discovery 2 system happens to be a VDO Dayton PC3200 and you can still get updated CDs for that:-

vdo dayton sat nav | eBay

EDIT: Have a surf around the Range Rover section and/or post up your question there too.