Allow certain usergroups to use certain custom bbcodes

[Boko577]

I want to be able to use bbcodes on my website such as iframes that other usergroups cannot. If you don't know what an iframe is, it allows you to add a window on your website that shows another website inside of it. As you can see, this could potentially be dangerous to users since someone could easily link to a site with viruses.
Another mod I'm looking for is one that allows you to hide certain bbcodes from going onto the bbcode list, where people can see how they work then use them. This would be used for my google adsense bbcode and so on.