Because there is the new option of using MySQL to store your Movable Type database, I wrote up a short tutorial for how to get MySQL ready for the conversion. This is particularly for people who are using CPanel (I'm using version 4) as their control panel on their server.
Get into your CPanel. (usually by going to http://yourdomain.com/cpanel)
Click Manage MySQL (from Databases box at the bottom of the screen) Scroll down to where it says
Db: _____________ [add]
I entered "mt" (without the quotes). This created me a database called love_mt – yours will add your username onto the front of mt.
Click Add.
Now scroll down to where it says Users.
I entered "kristine" and a password. This created me a user called love_kristine.
Click Add User.
Now scroll back up to where it has two drop down boxes with a button that says [Add User to Db]
Drop down the select boxes to select your database and username – mine shows love_mt and love_kristine.
Click Add User to Db.
Now your MySQL database is set up and ready to use for MT.
You should download your mt.cfg from your mt directory (see step 9 of upgrading instructions) and here's what my additional lines look like:
ObjectDriver DBI::mysql
Database love_mt
DBUser love_kristine
You'll also edit the mt-db-pass.cgi file and put ONLY your password in it – you don't need the words database_password in the file. (I did that wrong the first few times in the beta and couldn't figure out why it didn't work )