title: get European style week numbers
body: <p>Apparently SQL-CE 3.5 thinks of week numbers as if the whole world was American.
  I do however live in the EU, in the Netherlands. What is the right SQL-CE function to retrieve, for example:</p>
  
  <ul>
  <li>The week number from any given date </li>
  <li>The previous week number start date</li>
  <li>Current week number start </li>
  </ul>
  
  <p>IF SQL-CE is just unable to answer this in European week starts.
  Then is there some kind of (prefereably free) code to convert in between dates, 
  so we have a function that can translate between EU and American styles of week numbers?</p>
  
  <p>So that if we enter a European time range, week 1 to week 3, it gets translated to day X and day Y.</p>