Two columns in one post (editable)

Hi,

I have this problem, i want to have the option to make two column post somethink like this

header | Content, bla bla bla bla
______| Bla bla bla bla bla bla b
header2|
______|

So my question is, if there some plugin replacing tinyMce editor, with option two column, or some way to do this, or maybe you have some other ideas,

Thanks very much for future help ??