I want to send an email to several Groups of people that I have put together in the 'People' area.  I go into Hotmail, press 'New', press 'To', select 'Categories' and, in the past, the Group names have appeared in the 'Categories' section for me to select.  At present, none on the Group names that I have created in the 'People' area appear in the 'Categories' section of a new email.  How do I put a newly created Group of people into the 'Categories' section which I can then select so that the Group name appears in the 'To' box on a new email that I want to send out?