How to add a reference to System.Numerics.dll
http://msdn.microsoft.com/en-us/library/7314433t(v=vs.80).aspx
From MSDN:
- In Solution Explorer, select the project.
- On the Project menu, choose Add Reference.
- The Add Reference dialog box opens.
- Select the tab indicating the type of component you want to reference.
- In the top pane, select the component you want to reference, and then click the Select button. Press CTRL while clicking to select multiple components.
Right click on "References" in the solution explorer and click on "Add Reference" as shown below in the image.
