While I agree that your work is very, very nice, I also agree with Kcool about using the logos of other companies. More than likely if you contacted them, they would not approve. Just something to consider. Keep up the good work!
this is a marvelous work done by you. try to better it in the next attempt. i want to suggest you something. i was using firefox and found that the images are emerging at the bottom of the page instead of appearing on the left side. Try to fix this.