Start the installation with virt-manager or virt-install.
Itanium support
Presently, Red Hat Enterprise Linux hosts on the Itanium® architecture do not support fully virtualized windows guests. This section only applies to x86 and x86-64 hosts.
Using virt-install for installing Windows Server 2003 as the console for the Windows guest opens the virt-viewer window promptly. An example of using the virt-install for installing a Windows Server 2003 guest:
Once the guest boots into the installation you must quickly press F5. If you do not press F5 at the right time you will need to restart the installation. Pressing F5 allows you to select different HAL or Computer Type. Choose Standard PC as the Computer Type. This is the only non standard step required.
Complete the rest of the installation.
Windows Server 2003 is now installed as a fully virtualized guest.