Hi - I'm preparing an Excel spreadsheet that has a detailed travel itinerary, and want to include hyperlinks to web pages of interest. There's no problem copying and pasting the full web address (via Command-C and Command-V) into the Hyperlink dialog, and the web address turns blue, is underlined, and looks fine - but when you click on it (before or after saving the workbook) you get this error message: "Unable to open http://thewebaddress. Cannot locate the Internet server or proxy server." Any suggestions as to what the problem might be? Thanks!