c# - Implementing IDisposable correctly

In my classes I implement IDisposable as follows:

public class User : IDisposable
{
    public int id { get; protected set; }
    public string name { get; protected set; }

    public string pass { get; protected set; }

    public User(int UserID)
    {
        id = UserID;
    }
    public User(string Username, string Password)
    {
        name = Username;
        pass = Password;

    }

    // Other functions go here...

    public void Dispose()
    {
        // Clear all property values that maybe have been set
        // when the class was instantiated
        id = 0;
        name = String.Empty;

        pass = String.Empty;
    }
}

In VS2012, my Code Analysis says to implement IDisposable correctly, but I'm not sure what I've done wrong here.
The exact text is as follows:

CA1063 Implement IDisposable correctly Provide an overridable implementation of Dispose(bool) on 'User' or mark the type as sealed. A call to Dispose(false) should only clean up native resources. A call to Dispose(true) should clean up both managed and native resources. stman User.cs 10

For reference: CA1063: Implement IDisposable correctly

I've read through this page, but I'm afraid I don't really understand what needs to be done here.

If anyone can explain in more lamens terms what the problem is and/or how IDisposable should be implemented, that will really help!