I give out hosting for free, and considering to put banners on people's pages, but, how do I automaticlly put them on or put a code on without them seeing the code.

Thanks in advance. =)

I give over 700MB and over 200KB of bandwidth free so really I need to make some money, if you know anything please inform me by posting an reply. =)

Well they'll have to see the code, but what you could do is this:-

make them put:-

<?PHP include "http://www.site.com/yourbanners.php" ?>

Then you make just edit that page with whatever banner you want the site to display, that way they can't edit it.

Thank you. =)