Each binary tarball contains the compiled binaries and documents of
the Xen 3.0.3 community release, including: 

 - the Xen 3.0.3 hypervisor compiled for the relevant arcitecture; 
 - a Xen-enabled kernel based on kernel.org 2.6.16.29;
 - the host (dom0) tools used to control the hypervisor; and
 - the current documentation. 

Each tarball is essentially the complete set of outputs that would
result from downloading the Xen source tree and typing "make dist". 
Once you unpack the tarball, you can install the software on your 
machine by doing the following: 

$ cd dist 
$ su - 
# sh ./install.sh 

After installation, you will still need to modify your grub.conf to 
enable booting xen. Typically this means adding an entry like 

title My Distro with Xen (2.6.16.29-xen_3.0.3.0)
        root (hd0,0)
        kernel /xen-3.0.3.0.gz
        module /vmlinuz-2.6.16.29-xen_3.0.3.0 ro root=/dev/<foo>
        module /initrd-2.6.16.29-xen_3.0.3.0.img

... obviously replacing <foo> with the name of your root device.