You might find the tutorials on Reftagger.com to be a little more helpful.
You can read through the Logos tutorial form their blog here: http://blog.logos.com/2008/11/adding_reftagger_to_a_wordpress_blog/
You can also use the code generator on Reftagger here: http://reftagger.com/#download
I hope this helps. If you continue having difficulties, I recommend you post any questions or comments in the official Reftagger forum:
http://community.logos.com/forums/68.aspx
