Thats the same with me.
I think it was a year or 2 ago that they announced that only people that previously accessed hotmail via Outlook or Outlook Express etc. would be able to use it for free.
Even if you have had your account for years but only now decide to use an email client I dont think they will let you.
Paul
I've had my hotmail account since late '98 and I can access it via Outlook 2007 fine.
Burnsy