When you first create your Web page, it's a good idea to save the Web page on your local hard disk so that you can make any changes or corrections you need before you put the Web page on a public or shared location.
When you're satisfied that your Web page is ready to publish, specify a location such as an HTTP site, an FTP site, a Web folder, a Web server, or a network server. Be sure that the audience for your Web page has access to the location you save to.
How Microsoft Excel data is organized after it's saved or published as a Web page
When you put Excel data on the Web, your main .htm file appears on the Internet or intranet location you specified and the supporting files, such as the .gif, .xml, and other .htm files, appear in a folder in the same location. The folder containing the supporting files has the same name as the Web page you saved. For example, if your file is named Page1.htm, Excel creates a subfolder named "Page1_ files." Excel also assigns names such as image001.jpg and image002.gif to the supporting files.
If you want to move your Web page to a different location, you can either republish the Excel data to the new location or move the .htm file and its supporting folder. You can also specify that the files not be saved in the supporting folder if you want to save the supporting files in the same folder as the Web page.