Automating Functions for Word Files

I am trying to write a macro that I can run on a Directory/Sub Directory structure to clean up a specific section of the over 10,000 Word documents that were created using the same format, but has two lines (appearing at the some point within the document(s)) that need to be removed.

I am trying to automate this function (10,000 documents is a lot) so that this can be completed in a few days versus a few weeks.

Can someone point me in the write direction as to where I can find a software tool to help me automate this function? If you have a macro, you can email it to me at mlindsey3@cfl.rr.com.

Eternally grateful.