in the episode Jack to the rescue who played Cindy Boss? wife.

Go to www.IMDb.com and search Three's Company. On the Three's Company page, click on episodes cast (http://www.imdb.com/title/tt0075596/epcast) on the left. Please stop asking who played who with countless threads. Everything is available on IMDb or on Three's Company episode guides. It is not hard to find on the internet.

I keep telling you I do not know how to to use www.IMDB.com I tryed Serching but I don't know where to9 go

I gave you the link: http://www.imdb.com/title/tt0075596/epcast