Upgrading to Office 2010

Hi all,
I am running Windows 7 with Avast 7. I currently have MS Office 2003 installed and plan to upgrade to Office 2010 shortly. What actions should I take with Avast before and during the upgrade? Should I disable or uninstall Avast during the process so there is no corruption in mail security or anti spam or any other adverse effects due to the firewall?