1st Post approved by Admin? Help!

[MintChip]

Alright, so I'm not a coder, but a know a small bit here and there.
What I'm having problem with is spam bots. Now I'm not asking for plugins or anything of that nature. But I can figure out how to make it so the first post a registered user makes must be approved by an administrator. Can anyone help?

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Also, regarding plugins, how do I install new plugins? I don't even know where to begin with that.

Any help is appreciated!

[BlackChaos]

http://mods.mybb.com/view/required-approvals

Download the package and move the "inc" folder to the folder where your mybb forum is installed.