Although it's counter-intuitive if you just swap the code location with the facebook like button the Tweet button will be to the left of the FB button.
Use this as a replacement instead of the original directions:
Code:
{vb:raw fblikebutton}<div id="fb_likeframe" style="border: none; overflow: hidden; height: 27px; width: 95px; vertical-align: text-bottom; padding-top:1px;"><a href="http://twitter.com/share" class="twitter-share-button" data-count="horizontal" data-via="YOUR_TWITTER_USERNAME">Tweet</a><script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script></div>