Basic Joomla SEO, linkbuilding

I need some help with SEO on my Joomla site. The objective, to get more relevant traffic to my web services offering. Here's how you can help: - SEO for Joomla, update meta tags and titles - Linkbuilding - add content to target keywords - Any other search marketing suggestions you may have. Info: - The site is joomla 1.0.15 - I have around 500 unique visitors per month, and want to increase traffic - site is already regularly indexed by the major search engines. - site has google sitemap and conforms to google webmaster suggestions. - site is 3 months old - current pagerank 1, would like to increase that. - [login to view URL] Thanks for your help, happy bidding.