Synchronize It! 3.5 keeps all timestamps (files and folders, modification and creation). It's the only software I know on Windows XP which does that flawlessly, beside Robocopy, and I've tried many. Beware, though, it can produce corrupted files with source files downloaded using software like FlashGet or Orbit Downloader (the resulting files have the same size but only 25kB is actually copied - the rest is filled with zeros). I asked the creator of the software if he could figure out why, but he had no clue; I guess it has to do with such software downloading files in small packets (intended to optimize speed) and my data partition being hugely fragmented.
Robocopy XP026 is indeed included in Windows Vista, but works on Windows XP. Search "Robocopy XP026", or I can send the file here as it's not very easy to find. Or you can install Robocopy GUI and then search for the
robocopy.exe file in the System32 folder, so as to use it from the command line. The file I have is 208kB and the version number is 5.1.2600.26.
There seems to be a bug with the "backup mode", though:
Robocopy version XP027 apparently no longer has this bug but it doesn't work on Windows XP.