For those of you who don't check my recent comments list, I'd just like to draw your attention to an excellent comment I just received on an old post, from Lars Osland.
In the comment he recommends a website www.answersingenesis.org, and having given the site a quick peruse, I would like to second the recommendation. It has many resources, and links to other reference material to support the Genesis creation account and reject Darwinism.... without losing all scientific credibility in the process! The contributors to the site are credible scientists, and help cut through the unhelpful creationism pseudoscience to reveal the real scientific reasons why Darwinism is unsound. [Update: Having read the site in more detail now, it is not immune from dubious theories (see comments section). So for the record, I don't agree with it all!]
In particular he points out a link to: Arguments we think creationists should NOT use. Which is definitely worth a read before you enter a debate with a scientist over evolution. There are enough genuine reasons to reject Darwinism, but quite often "creation-scientists" do not help the cause by proposing theories that are equally ridiculous, or easily shot down.
I must confess to feeling quite vindicated, that one of the top arguments the site proposes against Darwinism is the Second Law of Thermodynamics. There is a whole section on it. This is an argument I have been championing on this site for some time. It is a very basic scientific law, that Physicists and Chemists learn while they are still at school (A' level) but the inevitable consequences of which seem to escape many who hold PhDs in Biology! The second law means that the increase in order in the species over time needed to support Darwin's theory of Evolution (or the "particle-to-people theory" as the AiG site puts it - I like that!) is not just highly improbable but totally impossible! it violates one of the most iron-clad physical laws in the Universe.
Darwinists often counter with the "open-system" response as to why the second law does not apply to processes on the earth, and so sweep it under the carpet. But the AiG site has an excellent response which proves this is an invalid argument... if you think about it, it has to be an invalid argument! If the Second Law of Thermodynamics did not apply on earth, scientists would never have discovered it in the first place!
For those who are not of a scientific disposition, there are also some nice illustrations like the one below: