Replace files across directories

A client was hit with a Crypto virus recently. To resolve the issue, I have restored their backup to a directory on a server. After days of replacing a corrupt with a 'clean' file, the client expects us to replace each corrupt file.

Is there a quick way to replace all .doc, .xls, .PDF, and JPG files in a directory sturcture that has been modified prior to the 22nd but not after the 24th?

A nice file copy utility may event do the job.

Thanks.

-svm

Genius is always standing in the midst of smarter company...