[BirdOPrey5]

You need to use phpmyadmin... (or some other MySQL interface)

Go to the settings table (note if you use a table prefix the table will be prefix_settings where prefix_ is whatever you set)

The entry you want to edit is: banip

You can just clear the value field for the entry or edit it to remove the wild cards...

In any case after making this edit you still have to update the datastore-

The easiest way to do this is to go re-run your upgrade.php script in your /install/ directory.