Answer:
You're funny ! Happy Birthday in spanish is Feliz cumpleaños (the n is pronounced like gn in lasagna). Try www.shoshan.net you can send a e-card for free - one even sings Happy Birthday in spanish - at bottom purple section - choose cumpleaños and look for two gift boxes one pink and one green ;-))
Día de nacimiento feliz a usted, día de nacimiento feliz, feliz nacimiento estimado, Kaitlyn, nacimiento Feliz día para usted!