Control DC motor with arduino duemilanove and transistor

Hello. I'm new to arduino and microcontrolers so i would appreciate some help. I have arduino duemilanove , transistor, LED, 330 ohm resistor and 3.0V DC motor. I would like to control it with my arduino which is connected with USB to my laptop and the things i currently have. Is it possible and if it is, could someone give me some instructions. Thank you. :grin: page 5