Solution:
block.tpl.php:
if (user_access('administer blocks')) { print "<a href='/admin/build/block/configure/" . $block->module . "/" . $block->delta . "'>(edit this block)</a>"; }
<div class="block block-<? print $block->module?>" id="block-<?php print $block->module . "-" . $block->delta ?>"> <?php if ($block->subject) { ?> <h2 class="title"><span><?php print $block->subject ?></span></h2> <?php } ?> <div class="content"><?php print $block->content ?></div> <?php if (user_access('administer blocks')) { print "<a href='" . "/admin/build/block/configure/" . $block->module . "/" . $block->delta . "'>(edit this block)</a>"; } ?> </div>