Professional websites are rarely developed in WYSIWYG (What you see is what you get) editors because of the rubbish code they spew out. You should learn how to write a website in (x)HTML/CSS without the requirement of such an editor.
Whilst I haven’t used Zend studio before, I guess there is no design view. After all, it is a powerful platform from which to program - it shouldn’t do the programming for you.