I always was envious of my friends Death Knight in Everquest (No not wow) so i decided to create my own in Skyrim. This is what i am thinking 2H weps/Heavy Armor/Conjuration and now the kicker... should i go blacksmithing or block. Of course i will use other skills along the way but i am mainly trying to figure out where to invest my points the best. Any ideas or suggestions?

I came in here to recommend a Shadowknight over a DeathKnight, but it's clear that is what you mean. I think you got the 3 basics down and after that it's up to you. Consider Illusion for tormenting?

I can't remember exactly what the quest is called (Whispering Door?) as part of the Whiterun Jarl quest chain, but the quest gives you a wicked 2H sword that drains health from the mob your hitting to give to you. Perfect weapon for a SK in IMHO