Upgrading from:

Graphics`Legend`

The functionality of Graphics`Legend` is now available from Plot Legends Package.

Load PlotLegends` to use the Plot Legends Package:

Version 5.2 << Graphics`Legend`; Plot[{x, x^2}, {x, 0, 1}, PlotLegend  {"one", "two"}]

Legend, ShadowBox, and ShowLegend were available in previous versions of Mathematica and are now available on the web at library.wolfram.com/infocenter/MathSource/6818.