note.txt

Folder containing package should be of the same name as the package itself. See FG PDC package for example. Also within this package you need /Kernel/init.m which defines the function required to obtain access to the functions within the package. Also need to look at the syntax of the package:

BeginPackage["ParametricDownConversion`"]

SymbolName::usage = " " (* gives user details of the function *)

Begin["`Private`"] (* implements the package *)

End[] (* correct syntax to end package *)
EndPackage[] (* correct syntax to end package *)