[1_iPhone_Lovin_Canadian]

go to the movies tab on the left in itunes, then go to where you put the video on your computer, then click and drag it into the black area in the movies tab, then go to your phone tab on the left and then go to the phones videos tab and click the sync button on the bottom, and the video will sync to your phone and your done,

If that helps please hit the thank button on the bottom right of my post