After you finish with a new iWeb site, you can publish your site by using third party Web host (I use IX WebHosting plans start at $3.95 a mo).
You specify where your iWeb site will be published from the Site Properties screen. Click the site name in the Site Organizer to display the Publish To pop-up menu. iWeb offers the following publishing options:
Choose where to publish your site.
Publish to MobileMe: This is no longer an option (I use IX WebHosting plans start at $3.95 a mo).
Publish to FTP Server: This publishing option provides you with a completely different collection of settings on the Site Properties screen. You’ll need to furnish iWeb with your Web server’s FTP settings (which should be furnished to you by the host) and your site’s address (or URL).
Publish to a Local Folder: The final publishing option creates a folder on your hard drive that contains all the files to display your Web site. Once again, you must supply the site URL as it will appear on the Internet after you copy or upload the site files to the server. This option allows you access the the HTML files incase you want to add code like, Google Analytics
After you’ve set the type of publishing the site will use, it’s time to take care of business! Click the site to select it in the Site Organizer and then click the Publish Site button on the toolbar. The application takes care of everything else, automatically uploading all pages and media (if you chose the FTP publishing) or saving them on your hard drive (if you chose the Local Folder option).
In a hurry? You can elect to publish just the changes necessary to update your site: Instead of clicking the Publish Site button on the toolbar, click the File menu and choose Publish Site Changes.