Hi all; this is my first post here, so bear with me while I learn the ropes.
I'm going to second Jman's comment that the Old Testament account of creation is definitely wrong. The first error comes on page 1 of the Book of Genesis when it says that God created the Earth before He created the stars, when we know without a doubt that there are stars out there much older than the Earth.
As for being an advocate of creationism as in the Big Bang, I'm going to have to disagree there. There is exactly zero evidence that God even exists, let alone that He made the Big Bang happen. If anything, God's existence is highly suspect. Here's my argument:
If someone came up to you in the street and told you that he just saw a vampire or a werewolf, you would rightfully be skeptical. If you were in a good mood, you might even humor him and ask him for some evidence. If he couldn't produce any evidence, you'd continue to feel justified in your skepticism. The idea of there being an omniscient, omnipotent God that created everything and cares about you personally is a much more far-fetched story than a vampire or werewolf. If you admit that you would be skeptical in the first case, and if you want your reasoning to be consistent, you don't have much choice but to accept that you should be skeptical about God's existence as well.