From our very own free FireFox Facts comes an essential powertoy for Web developers: “Ever wanted to edit your CSS files for your Web site while getting a live preview on both Firefox and Internet Explorer? CSSVista is a program that will let you do that all in one application. The only catch is that it is only for Windows XP. I have to say this is one freeware program I won’t be doing without anytime soon.” Great find, Mitch!