title: How do I draw a rectangle onto an image with transparency and text
body: <p>This is my first graphics based project and to begin with I need to be able to draw a rectangle onto a bitmap with transparency and text.</p>
  
  <p>I'm not sure where to begin with this.  I've done a little research but can't seem to find an article that will allow me to add a semi transparent rectangle to an image.</p>
  
  <p>What I will have is an image stream that I need to be able to manipulate.</p>
  
  <p>Can someone please point me in the right direction for this?  </p>
  
  <p>A site with source would be great as I have never done any GDI work before.</p>