Why do you want to cheat?
*Points to OPs spelling and grammar* You can judge a person's tendency to cheat by their ability to use coherent grammar.
I kid. I kid.
To OP: You can't just type the NPC's name, you have to use their ID. For example, if I wanted to kill M'aiq the Liar in Oblivion, I couldn't type "kill m'aiq the liar". I would have to use the Reference ID (in this case, 0000AA5B). To find the Reference ID, you have to use G.E.C.K (the game editor), I believe. For Skyrim, most likely you will have to use the Game Editor, or you could just use UESP to find the ID. They have it listed under the NPCs name, and in due time they will have it for Skyrim.