Norton AntiVirus 2008 Definitions Update (Windows XP 64-bit/Vista 64-bit)

Download this file for the latest in virus detection and repair. This definitions update is a complete replacement for any previous virus definitions set and will work with the following Symantec products:

Norton AntiVirus 2008 for Windows XP/Vista for 64-bit OS only

Norton Internet Security 2008 for Windows XP/Vista for 64-bit OS only

Symantec Endpoint Protection 11.0 for 64-bit OS only

Read the rest of the article here