Thanks! Got it working now. I took the code from
here and combined it with
{serendipity_showPlugin class="serendipity_categories_plugin" side="hidden" negate="null"}
Now I was wondering how it would be possible to include external template files to display the blog? Basically, what I'm trying to do is use the serendipity admin interface to write and create the rss feeds for the blog, but want to contain everything inside of my own webpage. The reason behind this, is that I have files that are on the root of the webpage that I want to still be displayed when the user is inside the blog. I cannot put some of these files into the template directory of serendipity or else they will not work correctly. I have tried using the absolute path to direct it to the correct file, but I receive the following error:
Warning: Smarty error: (secure mode) accessing "/[absolute path]/[filename].php" is not allowed in /[absolute path]/bundled-libs/Smarty/libs/Smarty.class.php on line 1095
Another question about the categories plugin... Can the links be changed so not to go to the blog directly, but to different pages / send in different parameters to the $serendipity['GET']['category'] function?