Customize a Dispose Method name

http://msdn.microsoft.com/en-us/library/vstudio/b1yfkh5e%28v=vs.100%29.aspx
From the above link please go to the section Customize a Dispose Method name,here it is said that in order to give 'dispose' method a different domain specific name(like Close) "implement Dispose privately and create a public Close method that calls Dispose".
My question is that how it is posible to make the Dispose(IDisposable) method private?
Please write me with example.it is urgent