Hello..i want to build an arduino car (4wd)...i dont want to include sensors...i just want to be able to drive it from pc or mobile phone (android)..so pls anyone can help me and list from me the hardware needed? and pls put specific names because i am a newbie 
A motor to make it go.
A h-bridge driver to interface between the motor and the Arduino
A servo to make it steer.
A Bluetooth module to receive data from your phone.
An Arduino - an Uno will do the job nicely.
A battery for the motor and servo
A separate battery for the Arduino.
This is not as simple as buying Lego bricks. Google will have a huge amount of information.
How much programming experience have you?
If the answer is "none" then start with the simple stuff that is covered by the examples that come with the Arduin IDE. They will cover almost everything you need to know.
...R