So I was googling around to find a frost spec.

This seems the most popular frost pve spec right now.
http://www.wowhead.com/talent#o0bZfcZff0hsIszMo

Is the points in ignite worth it? Probably the frostfire bolt is the main nuke spell, instead of frostbolt?

Please if you know the rotation list it down.

Thanks and have a nice day.