Question about Outlook Express

During November 2010 a full version of Microsoft Office Home and Student 2010 was installed on my laptop. Since then I have been using Windows Live for my emails, but recently after experiencing send/receive problems with Windows Live I decided to have a look at Outlook 2010.                                            I selected All Programs>Microsoft Office>Outlook 2010, the Activation Wizard then thanked me for installing Microsoft Office Professional 2010?, and that my trial period had now expired, and to purchase a full version click Upgrade now. I clicked as I had already previously purchased Home and Student 2010, I then went ahead and entered my Product Key. Hotmail connector then copied everything from my Windows Live onto Outlook, the progress box stating that everything had completed successfully. I can now receive mail on Outlook but I'm unable to send or write emails, which I assume is because at the top of the email page there appears the title Microsoft Outlook (Unlicensed Product).