How could I know when someone attaches a removable disk on my computer?

I would like to know how can I detect when the user attaches a removable drive on a computer ( in a Windows XP environment ) . There surely has to be a better way than constantly checking to see if the number of drives increased , right ?

From stackoverflow

• Here's an article at CodeProject

  http://www.codeproject.com/KB/shell/shchangenotifyregister.aspx