As a Flock fan, i cannot leave out the nice and cool blogging feature of this browser. So, if you still don't know how to do it (wait, you don't need it? It saves your time!), i'll help you. Following tutorial implies that you have admin rights on your Drupal site for enabling a module and change some settings. Also i'm using Flock 1.2b1 and Drupal 5.7. I'm sure it works for all Drupal versions with Blog API module and all Flock versions with self-hosted blog settings. Note, that different Flock versions have different configuration windows, but the idea is general for all.
1. Preparing Drupal
You need to enable core Drupal module - Blog API. This module provides XML-RPC API for posting content to your site. Also, you can enable Blog module that provides "blog entry" content type, but it is not necessary, because you can use any content type for blogging, depends on your wish.

2. Configuring Drupal
Go to the admin/settings/blogapi and check a content type you'll be using for blog entries. If you have already enabled Blog module, then you already have the default type of content for the blog - "blog entry".

3. Configuring Flock
Open your "Account & Services" left panel. Click on "Self-Hosted Blog":

In this tutorial I'll be setting up this site for blogging with Flock. Now, check that the wizard appears:
Enter you host name here (http://alexisyes.com on my side)
Enter your Drupal user login and password (this user must be able to create the content type you selected at p.2)
If everything is all right you should see this:
4. Blogging with Flock
Open "File -> New Blog Post" and you'll ready to go!:
When you'll click "Publish" you'll get blog publishing settings window with categories taken from your Drupal taxonomy vocabulary associated with your content type. I have one "Tags" vocabulary associated with "blog entry" content type, so you are seeing tags as a categories on the screenshot (you can select multiple tags with CTRL)
Good luck!
















