See the Repair Office 2007 Installation section (ignoring the Run Office Diagnostics section directly beneath it) on this page => http://www.slipstick.com/tutorial/repair-office-2010-2007-2003-installations/
In short: Control Panel | Programs | Programs and Features | Uninstall a program | select Office 2007 | select Change | select Repair
Is that what you did or...?
What "maneuvering" did the tech have to do? It could be the cause of your problem.