Text problem

How to force the text to only displayed in certain wide?
I mean I just want to have the vertical scroll and not the horizontal one.
Thx in advance.

I think you mean the width of the forum no? To change that go to admin panel=>Styles=>Pictures and Colors=>Colors and look for this option "Forum width (number or %)" and change the number in that box.

Well, I mean sometimes when a very long text is typed without space, The page will go so wide that summon a horizontal scrollbar.
How to force the text that although typed without space, still go to the next line when reach the end of the screen.