Build an Online Store

Oscommerce SEO work on present website, Need someone who has real hands on, and can finish the job quick. 1. Resolve the validation errors, make our site fully W3C compliant. 2. Optimise for viewing on a mobile or tablet. 3. Replace all the instances of presentational tags with a semantic alternative 4. Change this website to make use of div elements and CSS to create the desired layout. 5. Backlinks profile is not efficient enough to help the search engine visibility. 6. Our website seems to be attracting traffic, but this traffic is almost > stagnant and limited, which affects potential sales as we move forward.