In all fantasy references to "Law vs. Chaos" conflict, chaos is always representitive of evil, destruction, madness, lawlessness, barbarism, etc. while law represents that which is largely considered good ie. civilization, order, creation, reason, etc. Law and chaos are merely another way of saying Good and Evil. This doesn't work so well in D&D where law and chaos are actual things seperate from good and evil.
There is no passion to a law vs. chaos conflict in D&D. Paladins aligning with devils in order to fight elves and eladrin because they are chaotic? No way. Good and evil is a viceral, instinctive conflict. Law vs. chaos as shown in D&D is more of a cerebral exercise, a battle of philosophers perhaps but not anything most sane mortals could sink their teeth into.
Sundragon