http://community.citrix.com/display/xs/The+Operation+of+Unsupported+Guests+on+XenServer+5.5+and+5.6 http://community.citrix.com/display/xs/Configuring+CentOS+5.5+Guests+on+XenServer+5.5+and+5.6 http://community.citrix.com/download/attachments/149652553/makecentos5_5.sh?version=1 makecentos5_5.sh