Version 2.1.1 or newer:
PUArcade supports IBProArcade games right out of the box.  No hacks, modifications, or any other effort is required.  Simply install them just like you would any other game.  No problem! 

Version 2.1.0 or older: 
These older versions of PUArcade require a hack to index.php in order to work.  Note that if you have other arcade systems installed, it is possible that one of them will grab the score from PUArcade, or vice versa.  Thanks to forum user Chiii for this hack, see the forum thread here.

1. Open your Joomla index.php in a text editor
2. At the start of the first code block, insert the following code:
   if($HTTP_GET_VARS['act'] == 'Arcade')
   {
        require "newscore.php";
        exit;
   }
3. Save your changes.  Upload the file. 
4. Test!

Here is a forum thread with some good information about this if you can't get it to work: Click Here.
If you have any trouble, please post in the forums.

Some IBProArcade Games have multiple files located in multiple folders.  Currently, these require a little extra effort to get working.  Thanks to forum user JCarnley for this information, here is the thread.  This is what you have to do:

1. You need to also take care that you don't misspell anything including making a lowercase capital or vice versa.
2. Use JoomlaXplorer.
3. Click on your Joomla root directory.
4. Create a folder/directory there called "arcade".
5. Inside arcade create a folder/dirctory called "gamedata".
6. Inside gamedata you will need a FOLDER / DIRECTORY for each individual game for example "yeti8".
7. Inside the yeti 8 folder upload the rest of your swf files for that game.
   
   Its logical that you have to have exactly the same directories as comes packaged with the game or else the main swf file can't call the other files and the game will not load properly.  A second method of doing this is to upload the tar file for the game and unpack it in the arcade folder. This will automatically place the files into the gamedata folder. But the newer versions of Joomlaexplorer won't unpack for me.