I like the Death Knights so far.

But they are so new to me that I can't think of any great ways to put certin abilities/spells into groups for /castsequence.
I guess what I'm asking for is, do any of you have any suggestions on the best use of macros for a DK as a tank?

I have my paladin set up to use about 4 main keys for tanking.
Do you think it's possible to do the same with a DK, or will it be similar to the micro-management of warriors?