Norton Internet Security
Windows 2000 compatibility was dropped from this release. Compatibility with 32-bit editions of Windows Vista was introduced later in this release with a patch from Symantec. When installed in Vista, 350 MB of free space, an 800 MHz processor, and 512 MB of RAM is needed. When installed in Windows XP, 350 MB of free space, a 300 MHz processor, and 256 MB of RAM is required.