The final step in becoming an RD is passing the RD exam. Click HERE for more info. Once you pass the RD exam you are officially a registered dietitian, and to stay an RD you must complete continuing education.
Since I still ahve at least nine months before I can sit for the RD exam, I do not have much to add... I will probably tackle the RD exam the same way I did the GRE: get several review books and be a recluse for a month!
Happy New Year!

PS - send me good thoughts on Monday when I begin my internship!