A UTH should never be used without some kind of control. Amazon.com has good prices, but you don't want to wait a week to get it. I have seen some post about a light dimmer, but I can't quote what I don't remember. Look for local people, a club or society, may be some one can lend you a unit.

Also, google and download Ispell. A neat spell checker for on line forms!

Where do you get off giving spelling advice? Was the question what is the best spell check program, also online is one word and you spelled forum wrong!