You can't get iLife or any of it's components on Windows (trust me, I've tried before).
But the sites below are free and easy website designing sites that should help you. No download necessary I've been using them for a while and have found that they're safe.
http://www.freewebs.com/
http://pages.google.com/
Good luck! ;-)
p.s. If you are willing to pay for a good webpage builder, I would recommend Adobe Dreamweaver. Just do a Google search for it.