Kareem,
please read Dueteronomy 21:22-23 for the background and reason for the New Testament references to the crucifixion and "being hung on a tree" being used interchangably.
and then read the account in this link
http://www.crucifixion-1.com/
You see, it is beyond dispute that he was crucified. But rather than spend time trying to disprove the way He died, read instead THE WAY He died and realise it was for you.
Carol[/b]