There are at least a few ways to re-direct any website, and they each come with pros and cons.
(1) The Meta-Refresh Method
Adding this bit of code to your blog "Main Index" template will mean that your blog's visitors will be immediately redirected to this UThink Developer's Corner blog:
You might want to add a short time delay to the refresh to allow users to see a message, like, "Click here if you are not automatically redirected in 5 seconds." To do this, change content="0" to content="5".
(2) The PHP method
If your blogs are using PHP (the extension of your blog's main index page is *.php), then you can add this bit of code:
header( 'Location: http://www.yoursite.com/new_page.html' ) ;
There are lots of other redirect methods, but these are the two most commonly used. The first method (meta-refresh) is said to be "W3C non-compliant", since it breaks the normal use of a user's browser back button. (If a user goes to your redirect page, gets automatically redirected to the new site, then hits "back", they are taken to the redirect page, which forces them forward again.)