title: How to add an existing folder to a Visual Studio project?
body: <p>I have a web application project made in Visual Studio 2008.</p>
  
  <p>Well, I added a <code>jquery</code> folder and added it to source control and other such things. I forgot to add it to the visual studio project though. How do I add the existing folder now? I've tried just creating a new folder and naming it <code>jquery</code> but it gave me a cryptic error "the directory is already on the disk ... if you want to see this directory then check the Show All Files option in the project file" Yet I looked and saw no such option. </p>
  
  <p>Is the only way around this to rename <code>jquery</code> to <code>jquery2</code> and then create a new folder via visual studio named <code>jquery</code> and copy all my files into it? </p>