Thanks guys. Will have to look through that menu a bit more and see if I have it. Otherwise, I too might not have done anything for them yet either.
Tap attack for basic attacks. move a direction to make different angled attacks or forward/backstep attacks.
Hold attack for strong attacks that eat up a lot of stamina, but do a lot more damage. Also can cause different attacks with movement.
It seems a lot of people don't like it much, but as one of the few people playing in 3rd person, I've enjoyed it pretty well. When in melee I almost exclusively use a greatsword.
edit: link -
http://www.uesp.net/wiki/Skyrim:Controls