Happy new Year! (lit. "many years". Use whichever wish is appropriate. Note that "many years" is a generic wish that can be used for birthdays, name-days, Christmas and New Year but I assume it's for new year 'cause of the rest of the context).
My best wishes Eric (lit. "[I wish you] all and whatever you wish for Eric. Another generic wish, very common in Greek)
(May you be)always strong/healthy, happy and lucky. Many kisses cousin. May 2010 bring you all and whatever you want/wish for