The AMD64 CD has four sata modules for a 2.6.3 kernel but boots a 2.6.7 kernel, this rendering these modules useless. It is also missing most of the SATA drivers.
The SATA drivers exist and are the correct version. However, you may need to "modprobe ide-disk" to access them. If this doesn't work for you, then the 2004.3 LiveCD will be available sometime tomorrow.
More like in 2 hours.... *grin*
Moving these so we can remove the "Install CD" component from "Gentoo Linux". I apologize to everyone for this spam, but according to the bugzilla developers, this is the only reasonable way to do this.