how to write rethan in hebrew?

Hebrew doesn't really work like English. Not every sound is the same or is even available. The 'th' blend just isn't there, though 't' and 'h' are. Plus I'd need to know how to pronounce the name. Is the 'e' long (like in sheet) or short (like in pet). Same question about the 'a' in the name: how is it pronounced?

short like pet

I would agree with what Jespah was wrote.

Also, I will add that the name is not a Hebrew name (there' no equivalent). Also, be aware that the Hebrew language font cannot be duplicated here without first dowloading the font.

A similar type of question was asked and answered here. Check out this info and the link that is posted there for a full explanation of name transalations and Herbrew language script. http://able2know.org/topic/122671-1

If you have any further questuions, I'd be glad to help but the link to Hebrew names and language pretty much covers this.