Fijian, I apologise, I didn't phrase myself very well earlier, so allow me to clarify.
Of course I believe that God could have created the universe in an instant if He chose to. What I meant was that if He chose to record it in the Bible as being done in six days, who are we to say otherwise?
I accept that the word translated 'day' here may mean an indefinite period, and I in no way want to offend anyone who doesn't hold to the literal six day creation, I'm merely giving my views on the subject. I just find it easier to go with the literal 'day,' as I don't see us ever finding conclusive proof that it was otherwise.
Peace!