Microsoft Office Word Problem

Dear Good Guys:

I have this problem of Microsoft Office 2007 Installer popping up every time I open Word 2007. Surprisingly it doesn’t happen when I open the other suite applications such as Excel, PowerPoint, Access, etc. I uninstalled Office Enterprise 2007 and re-installed it again but the problem persists. I let the installer complete and runs Word again but it continues to pop up. Has anybody any idea as to the nature of this problem?

Sam