[Users] VisIt reader?

Hi,

Is there an existing reader of Cactus data files for VisIt? I ask because I have VisIt installed on my mac and VisIt has a volume viz option built in which I'd like to try on some ET data sets. Also I have downloaded yt and would like to know whether anyone has written a reader of ET data files for yt? I seem to recall on this list recently someone was going to look into using yt for ET, but don't know how far along this is as yet. Please clue me in.

Comer