Upgrading from:

Utilities`Package`

SystemInformation gives detailed information about your Mathematica system. "Packages & Files" under the Kernel tab gives information about the packages currently loaded into your Mathematica session.

List the available packages:

Version 5.2

Annotation was available in previous versions of Mathematica and is now available on the web at library.wolfram.com/infocenter/MathSource/6830.