Hot Mail will NOT send my Email group of 10!

I am a NEW Windows 8 User.  I previously used Vista with Windows Mail.  I am not a Business.  For years I have had Email Groups to Friends & Family.  Today, I sent my first email to one of my Groups, and Hot Mail would not send it.  Why do I even need Hot Mail?  I know that a Microsoft Employee spent nearly 3 hours to set up my new mail account.  My Primary email address is (removed by the moderator)  Some how my wife's name, Jo, has become the primary sender.  That is incorrect.  We have other email addresses that are all linked to this account.  They are (removed by the moderator); and (removed by the moderator).  I cannot function with limits on my email groups beyond what I have had during the past 6-8 years.  Please call me at (removed by the moderator)or (removed by the moderator)so this problem can be solved...JERRY CUDNEY (removed by the moderator)