How many games on yahoo chess are requiered to obtain a rating?

I've been playing Chess on Yahoo! Games for a while now and its still showing my status and provisional, How many games do I have to play until it shows me an actual numbered rating?|||20 complete games|||20 total games. It doesn't matter if you win or lose those games. Just the total games count.|||You must win 20 games first. After that, you are not listen "Provisional" anymore.|||My recollection is that it's 20 games before you stop being listed as provisional.