WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Front Panel, Storage Compartment And Radio
Courtesy of VOLVO CARS OF NORTH AMERICA.
Install the front panel
Install the storage compartment in the center console
Connect the connectors and the antenna cable to the radio