Setting up 301 Redirects

If you had your site hosted elsewhere, 301 redirects are useful to tell the search engines where your pages are.  For example, if you had a page called http://www.mywebsite.com/blog_page.php you would want to make sure the search engines knew to look to http://www.mywebsite.com/blog on your new site.  Otherwise the search engines would see that page is no longer available and remove it from the indexing.