Hi. If you can sync your ipad to your laptop, then your laptop movies should appear on the itunes page.
You shuld be able to click the movies you want to sync with your ipad.
If you are using jailbreaked iPad then install the ultimate video player: Buzz player which is capable for video streaming over your home network or you can copy your movies to Buzz player library.
Try AVPlayer HD. Works like a charm and allows you to transfer movies from computer to iPad via wifi and allows you to play any formatted video on the iPad as well