[chrishajer]

Just put what ever sort of link you want (button, image, text link) in whatever page template you want the link to appear in. Just edit the proper template (maybe header.php) and put something like this in it where you want the link to appear (maybe near the login form around line 36 in the 0.8.3.1 release):

<a href="http://www.server.com/blog/" title="return to blog">Return to Blog</a>