To: %%email%%
From: %%admin_email%% (%%sitename%%)
Subject: Welcome to LiveJournal!

Congratulations, you have a new LiveJournal account!
Below is your LiveJournal username and password:

   Username: %%username%%
   Password: %%password%%

You can change your password at:

   %%siteroot%%/changepassword.bml

The URL that your new journal is located at is:

   %%siteroot%%/~%%username%%/

You can go to %%siteroot%%/ to access your account, create new
journal entries, and modify your journal options, but we recommend 
downloading the LiveJournal client software.  It is the easiest way
to update your LiveJournal!  Get it at:

   %%siteroot%%/download

There will be pointers to documentation here once I write it.
In the meantime, you get to learn by experimentation.  Enjoy!