The Template for Ubuntu 9.10 64Bit is avaliable for download.

Image Is an Ubuntu 9.10 Installation excluding Grub2 and The fs is ext3 instead of Ext4 due to xenserver and pygrub incompatabilities, Make sure that if you use the apt-get update or aptitude update and Upgrade and the kernel is updated, double check the grub config before rebooting, to ensure that the ec2 or a xen kernel has been installed, otherwise you will have to use the xenserver tool xe-edit-bootloader to fix your grub conf.

You can download at one of the following Sources
Vm Details.
Username root
password password
Network set to dhcp

Source 1 or Source 2