Was wondering if you got this resolved.
Go to your WordPress dashboard..then click /options/presentation/theme editor. When you're at your theme editor look to the right side and you will see the different files that come with your theme. Now find sidebar.php, and click on it. The sidebar file will open up in the editor. Scroll down to the bottom of the sidebar.php file and paste your Technorati code just before the closing </div> tag.
Hit 'update file' and you should see it on your sidebar.
Good luck to you and sorry you're having a time of it. Been there myself..(and still am sometimes lol). I'v found it's usually a matter of getting used to WordPress and searching the support forums, etc. There have been many many people befoe us with te same problems..so that's good to know..we're not alone ;O)
The fixes are usually easy once we get the hnag of things.
Try saving the fixes you find to your favorites here at support..saves looking for stuff again. And if your problem gets 'resolved' just look to the top of the thread you started and click resolved so people know it's a closed topic.