SEO and Link building for Oscommerce Website

I have a jewelry-related oscommerce website(PR2/3) and need SEO including link [login to view URL] goal is to get to, and maintain top ten positions in Google, Yahoo, MSN for specific 4 [login to view URL] looking to establish an ongoing relationship with a SEO expert who would continue to enhance my website ranking on a monthly [login to view URL] include the method you're gonna use and how much each part would cost. The bidders should provide reference of SEO work with associated keywords. PS.I will not accept unethical methods or link farms,redirects / hidden links for link building job!