WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Gearbox Cable
Courtesy of VOLVO CARS OF NORTH AMERICA.
Disconnect the gear cable from the gear selector assembly.
Pull out the cable shaft with a pliers.
Remove the circlip holding the cable casing in the gear selector assembly.