Grep Crystal Reports (with Sub-Reports)

Question

I need a way to quickly search a large number of Crystal reports (with sub-reports) for the names of several stored procedures. (Trying to find dependencies.) I'm running Windows XP and downloaded this grep program. So far, I'm not convinced that it's working. Does anyone know of a reliable way, other than opening each report and sub-report, to search Crystal reports for the existence of a file name? Thanks in advance for any tips.