I want to know how to enter cheats on nsx2 is there anyone who can tell me how to do this.

Why u want nsx2 to do lots of stuff while it's just a beta version.

I want to know how to enter cheats on nsx2 is there anyone who can tell me how to do this.

well as this is in early development it does not have any Action Replay/Gameshark function. But you could quite easily use Push Button or Password cheat forms. Such As This Extreme-G 3 (http://www.playstation2-cheats.co.uk/your_cheats/4998/Extreme_G_3_cheats.html) Example from PS2 Cheats (http://www.playstation2-cheats.co.uk/az_cheats.php?start=0) another Great site is GameFAQS (http://www.gamefaqs.com/console/ps2/)