Install MySQL
http://www.tucsonconsulting.com/software/service/database/mysql/install-mysql-50-on-openbsd-40/

Install Lighttp
http://www.tucsonconsulting.com/software/language/ruby/install-lighttp-w-fastcgi-14-on-openbsd-40/

Install PHP With FastCGI
http://www.tucsonconsulting.com/software/operating-system/unix/openbsd/40/install-php-51-w-fastcgi-on-openbsd-40/

Download And Extract Wordpress
mkdir /www
mkdir /www/sites
mkdir /www/sites/<example>.com
mkdir /www/sites/<example>.com/www
lynx -source “http://wordpress.org/latest.tar.gz” > /www/sites/<example>.com/www/wordpress.tar.gz
cd /www/sites/<example>.com/www/
tar zxvf wordpress.tar.gz

Configure MySQL Database For Wordpress
mysql -p
create database `www-<example>-com`;
grant all on `www-<example>-com`.* to ‘wordpress’@'localhost’ identified by <password>’;
flush privileges;
exit

Configure /etc/lighttpd.conf For New Site
http://www.tucsonconsulting.com/software/language/ruby/install-lighttp-w-fastcgi-14-on-openbsd-40/