Searching on windows quite be messy some times using windows search, but windows default search is not the best way to search for files sometimes.
Everything search is a free and faster search programs among all the search programs which I had used for Windows XP, but you should go to for Everything for search only if you have hard disk partitions of NTFS type file system.
Everything is not only fastest in searching but also in indexing, as at the moment you install it, you can start using it and it indexes files on your system at a very fast rate (1,000,000 files will take about 1 minute), but it only works with NTFS drives.
Everything also searches files with in the file that means you can search the text written inside a file, it performs the files indexing so fast as it uses the Master File Table.
I would give full score 10/10 to everything search among other search programs that I have ever seen. Moreover it uses very less amount of physical memory while running.
Requirements: It works with NTFS file system only.