Help Copy Files in Windows More Efficiently

Unless you use Vista, Windows has a nasty habit of stop the copying
process whenever it encounters an error some simple to mysterious
reasons. Then you have to start the whole process of copying over again.
There are programs out there that embed themselves into the Windows
shell that bypass this annoyance.

http://www.copyhandler.com/en/home/index.php

http://www.codesector.com/teracopy.php

http://www.ranvik.net/totalcopy/