here's the ones i did last year:
http://league.virtualsports.com.au/
This one if i recall correctly worked where you bought 25 players, got to play 17 of them and for every player that scored a try you got 4 points, if one of your players teams won you got 2 points, you chose a kicker and any goals he kicked were worth 2 points each. You got to pick a captain and any points he scored were doubled (not goals though). This and the last one im posting are my equal favourites.
http://nrlfantasy.foxsports.com.au/M/home.mc
In this one they give you 100 points to start with, and each player and coach is worth a certain value of points. Every stat counts toward the score, and negative stats can go against you. People who kick lots of goals and make lots of tackles were the safest choice. You can select a captain who doubles every score.
http://nrlfantasy.dailytelegraph.com.au/
This is essentially the same as the first one i posted, only scoring works similar to the second one posted. Tackles, Hit-ups, Goals, Errors, Penalties conceded etc. all count toward the score. This was easy to get good at once you know what stats work best... and i loved this as much as the first.
The middle competition was fairly average. But i like to participate in as many of these as i can.... helps pass time when bored at work. lol. can spend hours deciding what team to pick and what trades to make etc.