MyBB Community Forums

How do I install this plugin?

http://mods.mybb.com/view/plugin-uploader

I see that these are the instructions:
Upload ./inc/plugins/pluginuploader.php to ./inc/plugins/
Upload ./admin/modules/config/pluginuploader.php to ./admin/modules/config/
Upload ./inc/languages/english/admin/config_pluginuploader.lang.php to ./inc/languages/english/admin/
Create folder 'temp' in ./inc/plugins/ and CHMOD to 777.
Upload ./inc/plugins/temp/test.php to ./inc/plugins/temp/
Optional (but highly recommended) core file edit: Upload ./admin/modules/config/plugins.php to ./admin/modules/config/
Go to ACP > Plugins > Install and Activate
Go to ACP > Configuration > Plugins > Upload Plugin

But I don't know what they mean.

Can someone please help me make sense of this? As an FTP I'm using FileZilla but I don't know how to upload through it.

1. Unzip the archive.
2. Upload the contents of the directory 'Files' to your forum root (where index.php, showthread.php is).
3. Navigate to AdminCP -> Configuration -> Plugins.
4. Find 'Plugin Uploader' and click 'Install / Activate'.
5. Type your desired password and confirm it. Click Submit.