Stock Market Simulation

Could anybody please tell about some stock market simulations ..something like moneybhai where u can have ur hand in stocks virtually ..as in u don'treally invest any money..jus a game like thing ... i need some simulations 2 practice on before i make the jump to the real thing..thnks

You can signup for a Rediff account and play at
http://moneygame.rediff.com

Excellent system for beginners and to evaluate yourself without loosing real money..