I've created a actionscript 2 game, which is turn based (Like as chess / board game). where it allows only two players per game play.

And I want to implement multilayer mode. But don't know where to start.

I tried flash + php XML socket server.. is this good choice for such games ? Will I get problems when I have more users online ?

I had a look on smartfoxserver, playerio.com ,etc ..

But the problem is I cant spend money on smartfoxserver,etc for now.. because I don't know weather my sponsors will pay for it or not !
And I'm not sure what to do if my game doesn't get big !

I tried playerio.com and It looks cool and easy to use in my games. but the only problem is my projects are made with Actionscript 2 , Converting it to Actionscript 3 will be a pain !

Can someone give advice on this ?

its not a real time game, its simple turn based board game.

Is there any Free AS2 API that I can use on my own server ?

Thank you.