No db-config.php file in the root of wp-config and running Anti-Splog

Our website is waarba.com. We are getting a lot of spam in the groups area of BuddyPress. Searched through the plugins, and noticed I am running Anti-Splog, but just noticed the first step of adding the line of code to the db-config.php file.

Here’s the issue, I dont have a db-config.php file in my wp-content file root or anywhere else in my entire directory.

We have multi-site set up with BuddyPress activated. This is my second set-up of multisite… followed the instructions in the manual to the letter… but still no db-config.php file… help please!