Is the link missing or is it there but not working?
If it's missing, go to "start", "search", then "for files or folders". Choose to search for all files and folders. Do a search for msimn.exe
You should get one file up, with the outlook express symbol. Right click it and select "create shortcut". then Right click and rename the shortcut you've just made. Then all you do is click it and drag it to the start menu.
post back and let me know what happens.