I take that as a challenge.
As an example, what separates Homo sapiens from Homo ergaster, or more appropriately, what separates hominids from other primates? Basic characters. Not brain size, but walking erect. What separates Homo from Australopithecus? Various characters such as dentition, brain capacity, and most of all tool making ability (cultural factor). Species divisions are essentially arbitrary....a 200,000 year old Homo sapiens skull from China is different in detail from a 200 year old skull from France, but there is enough similarity statistically to place them in the same species. Fact, not faith.
I've heard every creationist argument you can think of and they all boil down to misrepresenting paleontology, physics, anthropology (both physical and cultural), biology, genetics, history and every other science and academic discipline you can think of.
If you want a board fight, you can go somewhere else because you aren't getting one from me. I have my faith in God and Jesus Christ, but I also know that Genesis is about the power and the majesty of God, and to reduce God's word to a simple fable about where man came from, rather than being a message about God's authority strikes me as blasphemous. I won't belittle my God by doing that. I respect and worship Him too much to take His work and make it as simple as these frauds would do.
Just to point out who these folks are:
http://www.geocities.com/CapeCanaveral/Hangar/2437/whoare.htm
http://www.geocities.com/CapeCanaveral/Hangar/2437/aims.htm
http://www.geocities.com/CapeCanaveral/Hangar/2437/design.htm
http://www.geocities.com/CapeCanaveral/Hangar/2437/diagenda.html
http://www.geocities.com/CapeCanaveral/Hangar/2437/wedge.html
http://www.geocities.com/CapeCanaveral/Hangar/2437/doctor.htm
These are lengthy, but also very informative.