WordPress Installation for multi-domains with nginx and php-fpm

I am new to WordPress. I googled around but could not find precise steps to install WordPress with nginx multi-site configuration.

I want to install wordpress 3.3.1 on Ubuntu 11.10. I already installed

• php5-fpm
• nginx
• mysql

I have two domains that I want use same wordpress installation

domain1.com 
domain2.com

Could you provide nginx and wordpress configuration for multi domain setup?
Thanks for all.