Howtoforge posted a tutorial about setting up OpenSUSE 11.3 x86_64 as webserver along with ISPConfig 3

This is a detailed description about how to set up an OpenSUSE 11.3 64bit (x86_64) server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable) with PHP, CGI and SSI support, Postfix mail server with SMTP-AUTH, TLS and virtual mail users, BIND DNS server, Pureftpd FTP server, MySQL server, Dovecot POP3/IMAP, Quota, Firewall, etc.

  The Perfect Server - OpenSUSE 11.3 x86_64 [ISPConfig 3]