You could just use a registrar that will redirect your domain name to your free hosted site. Some will do this for free with a little banner at the bottom of the page in a frame, or you can pay a small monthly fee to have it redirect with no banner at the bottom.
For example, a surfer types in
www.gigantictittyhardons.com, and this will automatically redirect them to
www.gigantictittyhardons.freehost.com which is the place you have it hosted at.
register.com has this service, as do other registrars.