Is there a meaninful difference between С Новым годом! and Счастливого Нового года! ? I've seen them both described as Happy New Year, but I think I really only see people actually say С Новым годом.

Also, is there anything like a standard for writing out russian in english letters? I want to SMS "С Новым годом!" at midnight Moscow time, since a telephone call would be disruptive.. but I'm not sure if the cyrillic characters will go through or not. I assume they would, since beonline.ru is a russian webpage, but I figure better safe than sorry.