In the moment I use 1.3 alpha 3 and it works fine. But I'm snoopy, so I want to install the next alpha versions. Is this the way to do this?
a) I'll backup the files at my server.
b) I upload the whole new version to my server and overwrite the existing files.
c) I restore single files, which I had changed before (index.php, wp-layout.css, wp-comment and so on).
Or have I to backup the mysql database too? (I'm not very experienced in this thing.)