Microsoft Office 2004 Security Update Error

Downloaded latest MS Office 2004 Security Update 11.6.0, and it has poisoned my entire Office suite of apps.😡 Since loading, I cannot access Entourage, Word, or any other Office apps. Error messages pop up repeatedly every time I try to open them. "MS Office library files may have been moved from original location. Reinstall Entourage, etc." For the last 6 years, this software and previous updates have worked flawlessly. This really stinks!!! Do I reload original software over the top of the existing apps., or is there another easier work around that I can use to get back into my MS Office apps.? I am running OS 10.4.11 Tiger with older Power PC processor.