point by point step guide on how to add an HTML signature to your email
http://www.knowthenetwork.com/2012/05/how-to-add-an-html-email-signature-to-outlook-2010/
Express
http://support.microsoft.com/KB/170968
http://www.knowthenetwork.com/2012/05/how-to-add-an-html-email-signature-to-outlook-2010/
Express
http://support.microsoft.com/KB/170968