Next, you need to locate the Addins folder on your computer. There are several places you may see a folder with this name. From the Excel help file: "Add-ins are stored by default in one of the following places:
* The Library folder or one of its subfolders in the Microsoft Office\Office folder.
* The Documents and Settings\user name\Application Data\Microsoft\AddIns folder."
If you're uncertain which folder to use, open Excel, go to the Tools menu and select Add-ins. In the dialog that will display, click the Browse button to see the path for the AddIns folder it is using. Once you've located this, you can simply drag and drop the HtmlMaker.xla file into it.
Note: If you cannot find the Application Data folder, you probably just need to change a setting on your computer.
1. Open Windows Explorer (or any folder) and select Folder Options from the Tools menu.
2. On the View tab, look for "Hidden files and folders" under the Advanced Settings
3. Make sure the option "Show hidden files and folders" is selected, click OK, and look for that pesky Application Data folder again.