I am trying to make a legend for a simple plot in Mathematica 8, but does not seem to recognise the command PlotLegends. I declared beforehand
Needs["PlotLegends`"], and get this message:
Needs::nocont: Context PlotLegends` was not created when Needs was evaluated. >>
I also tried to install this pakage manually by going to File -> Install -> .... I am not very experienced with Mathematica, so an answer for dummies will be appreciated.