I JUST BOUGHT A "USB KKL Vag-Com Cable/Interface 409 VW Audi VagCom OBD2"

BASICLY THIS ONE

http://cgi.ebay.com/ebaymotors/USB-K...spagenameZWDVW


I NEED TO KNOW WHAT ELSE I NEED...I HAVE THE WIRE..AND THE DRIVER..AND NOW WHAT ELSE DO I NEED TO USE THIS FOR MY CAR

I HAVE A 2002 AUDI A4 3.0 QUATTRO IF IT HELPS ..LET ME KNOW?