Mr Gotti, Thanks, Didn't work. I want to hyperlink to charts in an Excel Worksheet and they opened in a Firefox tab. Found a help page on EXCEL that indicated the software (FF) had to be registered before it could be changed. Tried to register FF and did not help. If all else fails will pick up a QuattroPro and use it. MS has gone to far. IMO!! Thanks again. Take care.........pilgrim <a href=http://fireworkspop.com/Liberty_.htm>Enjoy the Fireworks</a> <a href=http://nbc.com/Deal_or_No_Deal/game/>Deal or No Deal?</a> <a href=http://www.biblegateway.com/passage/?search=2%20Peter%203:9;&version=45>Going to church doesn't make you a Christian any more than standing in a garage makes you a car.</a>