Now, recursive copying of some of those directories does not work any longer, I get the error message 'This operation couldn't be completed since some data in could not be read or written (error: -36)'. So the fate my files had was 1) xp/ntfs then transfer 2) to mac OS extended journaled then 3) occasionally again access via (bootcamp) xp or 4) occasionally via Parallels xp and, finally, 5) occasionally via mac OS Tuxera ntfs. Shortly after I realized that it would be desirable to access ntfs partitions, especially on external USB drives, from Mac OS, and so I installed Tuxera 2009.10. Since I wished to maintain the possibility to work under xp, I kept my old bootcamp partition for xp and also proceeded to install Parallels 5.0. both generating new files in these directories and editing old ones.
Since all of these files run equally well under both xp and Mac OS I kept my old directory structure by and large and continued to work under Mac OS, i.e. Upon switching to MacOs 10.6.2 I transferred all these files onto the Mac (10.6.2/Mac OS Extended (Journaled)), i.e the default file system. I have very many files originally generated under win xp sp3/ntfs.