Here are the steps needed to install Microsoft Office on Linux (in my case Office Pro 2007, Ubuntu 11.10 with gnome-shell)

1. Install Wine 1.3


2. Install Wine Tricks


3. Right click on office.exe file


4. Wine walks you through installation


5. Open Wine Tricks, select the default prefix


6. Click Add Windows dll


7. Add riched20 and riched30


8. Open Wine configure


9. Click Add Application, navigate to the individual .exe files (e.g. winword.exe, excel.exe)


10. For those applications, hit the drop down menu and select Windows XP, making Wine emulate Windows XP just for office programs.