Windows XP had an option to "search within files" that would work even for non-indexed locations. Windows 7 by default only performs content search for indexed locations, but you can change this so that content search can also be performed for non-indexed locations by doing the following:
1. Open Windows Explorer and click Organize on the toolbar, then select Folder And Search Options from the drop-down menu that appears.
2. In the Folder Options dialog that appears, select the Search tab and then select the option "Always search file names and contents (this might take several minutes)"
An alternative approach is to use the "Search again in: File Contents" option if you don't find what you're looking for in the initial results of your query.
Mitch Tulloch is a seven-time recipient of the Microsoft Most Valuable Professional (MVP) award and widely recognized expert on Windows administration, deployment and virtualization. For more tips by Mitch you can follow him on Twitter or friend him on Facebook.