FCKeditor not updating database - please help..

I know I'm just missing SOMEthing. But I have no idea what.

I used FCKeditor on a website, last year, and everything works great. I am attempting to use FCKeditor on another site, currently, and everything SEEMS as though it's doing what it's supposed to do; but, when the submit button is clicked, none of the changes are appearing in the database. I've gone back to the pages I created on the previous site, and it all looks the same, so I think it's a matter of I didn't change something in a config file, or something like that.

Any ideas?

Thanks,

^_^