Is this a decent CO2 emitter, link attached

I'm about to move into the world of CO2 and I was wondering what you guys think of this emitter/regulator?

NEW CO2 Regulator Solenoid Emitter System - eBay (item 230272665065 end time Jul-24-08 23:00:13 PDT)

i will out bid you now.

your incredibly helpful.

thanks for the help everyone, guess I'll just have to start posting in the newbie section as that seems to be where to get a question answered.