I don't think this topic is related to ISPConfig
Meta keywords and such stuff may
be used by search engines, but most don't and even if they do use them it doesn't affect the ranking.
To make it known to the world, tell those about who may have an interest in whatever content it presents. Make yourself heard as commenter in related weblogs and leave your web address there. Make sure you have quality content that attracts visitors and make sure it's accessible by web spiders (have a look in the various SEO weblogs).
Noone will link to oyur site and pages on your site if noone cares about what you present there and if you have no incoming links from related sites you won't receive a good ranking, cause if noone cares about your site (and having no incoming links from other related sites is a strong indicator) then search enginges won't give you a good ranking, because they're built to give people links to quality websites for given keywords.
It's an organic thing to get your site known and it takes time. Ask yourself what and how much unique value your website adds to the web. The answer may give you an idea of what to expect from search engines in the future...