Are you looking to create a simple link to retweet a page, but you don’t need a fancy Tweetmeme counter with it? Try something like this:
<a href="http://twitter.com/home?status=RT @redwall_hp <?php the_permalink(); ?>" title="Retweet this page">Tweet it!</a>
When clicked, it takes the visitor to Twitter, where it fills-in the update box for you.
Just be sure to change “@redwall_hp” to your username.