It took me quite a while to figure out how to search for file extensions using Vista’s new search interface. In searching for an answer, *many* other people were perplexed, too.
In XP, you could type: *.xls to find all the Excel spreadsheets. That does not work in Vista. Here is what you do:
In the search box:
To search for one extension, type in:
ext:(*.xlsx)
or
ext:*.xlsx
To search for more than one extension, type in:
ext:(*.xlsx OR *.xls)
Make sure the OR is capitalized.
Here is a link to more search features:
Doug