As regards the issue of 24 hour days, however, I am forced to refer to Catholic doctrine, which states that the bible and science can never be in contradiction; any apparent contradictions are a result of insufficient understanding of the bible, or an insufficient understanding of the pertinent science. As the science (in my opinion) is quite clear that the stages outlined in Genesis took longer than a single day each(even if God created life in a single day, the natural processes that would need to take place to form the Earth would have taken millions of years), then references to a seven day creation of the universe must in turn refer to something else. What do they refer to? Well, my understanding of the bible is flawed, so I'm not terribly certain. Some say that the translation is flawed; others say the translation are completely accurate, but they were still intended as metaphorical ages; some say something completely different. I've largely left the argument to others, as the passages cited relate little to morals (beyond keeping the Sabbath holy), and my uneducated perspective would likely harm the understanding of others more than it would help.
Summarizing the above; if God caused the Big Bang, wouldn't he still have made the universe, in a very literal sense?
Mildly related addition to the above, does it matter terribly much? A flawed understanding of creation isn't going to damn me to hell, correct? This is a sincere inquiry - while I can understand why evolution/creationism arguments get heated, I've never understood why some old earth/young earth arguments have gotten heated.
My own apologies if I don't seem to be taking this seriously; on discussions that I haven't had in the past, I tend to tread lightly. You're not being too forceful in the least, though :) . So long as it's a polite discussion, a forceful stance from an informed person is likely to be thorough and well sourced - and thus, informative.