You'll need to go here:
http://football.fantasysports.yahoo....ahoo&ovtac=PPC
Then select the harder to find free fantasy football section (avoiding the easy to locate pay section) and follow the prompts from there. The links you posted won't work until you have actually joined the league.
Somer: Post what date/times the live drafts are. That helps those of us who work to choose the league that best fits our schedules.