This is the correct link from where you can download Worldspan: https://gopublic.wspan.com/SelfServe/downloadinstructions/instructions.aspx?InstructionsFile=UCI_Install.htm.
There are two download links on the right side of that page (one on the top side and one on the bottom).
Notice that you need to visit that page with Internet Explorer in order to start the download (when you click the link), otherwise it won’t start the download or do anything at all.
Windows 7 comes with Internet Explorer 8 installed.
Windows XP comes with Internet Explorer 6 installed. You need to update to IE7. IE8 doesn’t work on Windows XP.
Worldspan works fine on both IE7 and IE8 at this time.
If you don’t know how to check which IE version you have installed, start Internet Explorer, click the Help button and then click on “About Internet Explorer”.
If you don’t see the Help button (on the top), right click on the top bar and enable “Menu Bar”.
Another advice. Don’t use Internet Explorer for anything except Worldspan. If you use IE7 or IE8 as your normal browser, you might damage your Windows as these IE versions are pretty old and vulnerable to viruses and other malware.
If you install Chrome or Firefox, be sure not to set either of them as the default browser.
If that happens, when you try to launch Go Res (the Worldspan icon), nothing will happen because Worldspan will try to start with Chrome of Firefox (depends which browser is set to default). In this case, you will need to set IE as the default browser.