[villages07]

Gracie,

Check out www.thesolarguys.com

flat, flush, round disk mounted in ceiling of the room with a light diffuser cover to let in the light.

Special tube leading up to roof with highly reflective material.

on roof, round bubble dome to let in the light.

I was used to rectangular skylight before too. My solatube is 13" diameter and really lights up a large dining room. The reflective material in the tube is incredible for producing light...even in moonlight can see a faint glow 'up there'.