Problem with 2005 dodge neon

I need help, I have a 2005 dodge neon sxt. When the car warms up it starts jerking, what would be the problem please help?

Could use more info on this. Explain as to when it starts jerking. Is it when you start to take off, at costant speed, at deceleration? Is there any CEL (check engine light)? If so then please have your codes pulled at one of the carparts places that does this for free and post the code numbers here. It would help alot.