create a preseed file for unattended ubuntu install

I need a preseed file for the following options: Language: English Location: United States Keymap: American English Primary network interface: phsycial (not wireless) hostname: argo-staging domain name: <blank> root password: password timezone: mountain paritioning method: guided - use entire disk disk to parition: scsi1 partitioning scheme: all in one parition finish paritioning and weite changes to disk write changes to disk: yes use a network mirror: yes http proxy: <blank> install the grub boot loader to MBr: yes device for boot loader installation: /dev/sda