To manually add the EndNote addin files to Word's startup folder, follow these instructions:

1. Open My Computer (Computer on Vista).
2. Go to the Tools menu (press Alt to view menus in Windows Vista). Select Folder Options / View tab. Uncheck the box that reads "Hide file extensions for known file types," and select "Show hidden files and folders". Click Ok.
3. Locate your EndNote folder. The default installation path is "C:\Program Files\EndNote." Note that the EndNote folder will contain the version number at the end.
4. There are several files in this folder you will need to copy, depending on which versions of Word and EndNote you are using. You can use the list below to identify the files you need.
   
   EndNote X*
   • EN10CWYW.dot
   • EN10Cwyw.WordXP.wll
   • ENWebCwyw.dot
   EndNote 9
   • EN9CWYW.dot
   • EN9Cwyw.WordXP.wll
   EndNote 8
   • EN8CWYW.dot
   • EN8Cwyw.WordXP.wll
   EndNote 8
   • EN8CWYW.dot
   • EN8Cwyw.WordXP.wll
   EndNote 7
   • EN7CWYW.dot
   • EN7Cwyw.WordXP.wll
   EndNote 6
   • EN6CWYW.dot
   • EN6Cwyw.wll
   EndNote 5
   • EndNote5.Cwyw.dot
   • EndNote5.Cwyw.wll
   
   *Note that the EndNote X files listed are for EndNote X.0.2. If you are using EndNote X.0.0, download the update here.
5. Hold down your control key and click on each file listed for your version of EndNote and Word as shown above. When all the files you need are highlighted, right-click and select Copy.
6. Use Windows Explorer to navigate to the Word Startup folder. The default location of Startup depends on your version of Windows.
   Windows Vista
   
   C:\Users\[YOUR USER NAME]\AppData\Roaming\Microsoft\Word\STARTUP
   
   Windows XP/2000
   
   C:\Documents and Settings\[YOUR USER NAME]\Application Data\Microsoft\Word\Startup
   
   
7. When you locate that folder, right click in it and choose Paste. The files you copied should now show up in this folder.
8. Launch Microsoft Word. The EndNote toolbar should now show up in the Add-Ins tab of the Word 2007 ribbon.

Before you use the tools for the first time, close Word, then open EndNote and an EndNote library, then re-open Word and click on one of the EndNote tools. The programs must only be opened in this order the first time you use the tools so that Windows will be configured correctly.

1. Within Microsoft Word 2007 go to the Office icon in the upper left, and click "Word Options" at the bottom of this window.
   
   
   
   
2. Click on "Trust Center" on the left hand side, then on the "Trust Center Settings..." button at the bottom-right.
   
   
   
   
3. Click the Trusted Locations menu to the left, then highlight the "Word 2007 default location: StartUp" item in the list.
   
   
   
   
4. Note the path to the Microsoft Word Startup folder. The path should show up below the Trusted Locations items.