Installing The Co-op Script On IPB (1.2) Forum...
I've installed the Co-op successfully on an IPB forum. It turned out to be a lot easier than expected. Not sure whether this will work on anything other than 1.2.
Create the ad_network_xxx.php file as per the instructions. Create the .txt as per the official instructions as well. These two go in the root forum folder, where the index file is as well. Now open /source/functions.php in your forum folder. I've added 5 text ads at the bottom of each page within the forum just below the "Powered By" and copyright notification.
Look up line 1946 and change it to:
Make sure you change the ad_network_222 to the current number found in the Setup Instructions of your account.