There is a plugin available, but by default it cannot be done. Illustrator is a one-page program. The usual way about it is to do your multipage layouts in InDesign (you can place your Illy files or single-page PDF files there). Or optionally, if you use Acrobat Pro, you can simply join all your single-page PDFs.
If you're still looking for the Plugin, there are several out there, one is called HotDoor, available at http://www.hotdoor.com/ which will give you a page palette like Indesign and Quark, in Illustrator.
Google "Illustrator CS Multipage Plugin" to find the rest.
I've got a client that designed his own logo and simply wanted me to put it together. He only drew the outline and told me what colors to use. But I'm not sure if I can send this to him. Should I tell...