superbelt,
i don't think you have a firm grasp of what intelligent design actually is. when you talk of people who are proponents of intelligent design balking at giving equal time to hindu or ancient greek religions you're comparing apples to oranges. ID is based on the possibility that the observable universe has so much order/structure/complexity that it is likely that an overarching intelligent force has guided its direction. the theory itself is unrelated to christianity except in that they both allow for the existence of a higher intelligence.
whether or not the universe has been directed in its development is
unknowable either way at this point in history. there are compelling arguments to be made on both sides. while the answer remains unknowable, i think the practical way to educate our ourselves is to not make one side of the debate the only voice to be heard.
here's a FAQ on intelligent design