Hi Steve,
The idea is that you manage your league online, there is nothing to download. You can start a your own poker league on the poker leagues page.
I play in a home poker league - check out the Featured League on the right hand side of the page for an example of the leaderboard. You basically set up your league and then record the results for games. I am also working on integration with a desktop poker league manager called "Tourament Director"- you will be able to export your games on there and import them against your league. This feature will be available in the next 2 weeks.
If you are still having problems creating a league then let me know - I am working on a complete "How to start your Poker League" guide that will start from the very beginning and document the whole process and how PokerDIY makes scheduling games and the league leaderboard so easy.