I am the "kiasi" type so I went to a tour agency to do the application for me. If you want to do it yourself, here are the following websites:-
When I clicked on them, I want to "pengsan." (faint)... Too stressed to go through the steps.. that is why I rather paid the tour agency to do it for me and that cost another RM100.
Driving down to KL cost another RM100 in petrol and in toll... so adding up the cost and expenses, the total bill comes to RM712 (excluding the sleepless night, mental stress and the air tickets) :))
Oh, by the way, it does not end there... as Doc said in my comment, there is another "barricade" when we reach the US immigration...there may be another "interview" before we can really enter.... but fear not if one is a genuine tourist...