There is a new release available for the "40H" collection of PGN utility tools. A new tool, "gameNum" has been added. It puts a game number comment before each game in a pgn file. Sample:
{Game 501}
For a brief description of all 20 programs, here is a short "overview" file:
overview.txt
To download the package go to "Jim Ablett's Winboard Chess Projects" at
http://homepages.tesco.net/henry.ablett/jims.html
-Norm