Seo and Google submission


i need some seo advice.I have a website that is a Joomla portal,with CS installed in a subfolder(/shop).I need to submit the site to Google,Google Base and Yahoo,but i don’t really know what to do,because some people told me i could use x map(joomla site map generator)to create a site map from the whole website(Joomla + Cs Cart),regardless that cs is an independent website(with it’s own site map created).I would like to know how to behave on submiting this site to google.Any info about this topic would be great

link to the site: