If you have Windows XP, then log in to Windows as Administrator,
start an Office program, accept the EULA, close the Office
program, log out of Windows as Administrator, and log back in to
Windows using your normal user profile.
If you have Windows Vista, then right-click on an Office program
shortcut, choose to run the Office program as Administrator,
accept the EULA, close the Office program, and then start the
Office program normally.
If the previous suggestion doesn't help, then see
http://support.microsoft.com/?kbid=884202 "You must accept the
Office End User License Agreement every time that you start an
Office program".
