I have a page layout, PeopleSearchResults.aspx programmed by someone else. It contains the following tag for a SharePoint refine people search results control.
Title="<%$Resources:sps,RefineByTitle%>"
Where on earth/SharePoint do I look to find the string that code references?
The particular file you specified, sps.resx is actually in 12\CONFIG\Resources (but there's a bunch of others in 12\Resources).