XP Professional Outlook Express Email Tool Bar Disappeared

My OS is Windows XP Professonal SP2 and when sending or replying to an email in Outlook Express I used to have a tool bar under the Subject that gave me the option of Font type, Font size, Paragraph Style, Bold, Italic, Underline, Font Color, Formatting and Allignment choices. This has completely disappeared so that I don’t have these choices any more. I can reinstall the OS and get it back, but the next day it has disappeared again. I figure it is an update by automatic updating. So I reinstalled the OS and turned off automatic updates. The next day it was gone again. How do I get this tool bar back and how do I keep it from disappearing again.

Floyd