B2 Upgrade : Major Problems Need Help

I am having major problems in upgrading my B2 Blog to WordPress… First here is my server stats:
Operating System: Linux
Kernel version: 2.4.20-020stab009.3.777
PHP version: 4.3.8
MySQL version: 4.0.20-standard
cPanel Build: 9.4.1-RELEASE 64
Second I will describe my problem. As I understand the install, I am to install WordPress OVER the B2 SQL. Also I need to delete all the B2 files and upload all the WordPress files in their place. Ok, so I delete the B2 files, (backed up of course) and I put all my WordPress files where the B2 files were. Then as the readme says, I set up the config file just like my B2 config file was (same SQL database and same table prefixes) and then I rename it and upload to my WordPress folder. Finally I go to the install file. Step one – Fine, Step two – Fine (I put in the correct address to my blog), Step three is where the problem is… It says this below the WP logo:
“You appear to already have WordPress installed. If you would like to reinstall please clear your old database files first.”
I can’t figure out how to get around this… It must be because I have the same table prefixes as my B2… I dono, would somone be willing to A. Upgrade my B2 to WordPress, or B. Write a detailed (or give a link) upgrade process and highlight anything I did wrong? Thanks a bunch!
~Carl
http://www.thedailybloon.tk <my current B2 blog
Link to where my new WP blog should be: http://www.webcubedesign.com/wpbloon/
E-mail rauko at houston.rr.com