I didn't know that NTFS-4(?) was natively encrypted. If that was so, then you wouldn't be able to read it.
NTFS for XP and Win2000 sp3-4 have a newer version of NTFS. The reason writing is "experimental" is that every time the filesystem is reverse-engineered--Microsoft changes it. I am not sure if the journaling and speed of the newest version is any real improvement-or-whether it is to make sure only "Microsoft Partners" can manipulate, resize, and write to it.
Frankly, I feel that the people who maintain the filesystem module for NTFS should receive much praise and approbation for even being able to read it.
You can still back it up as an image, or as FAT32. If you choose to use NTFS as the filesystem, then use the Microsoft "converter" utility to convert it to NTFS after your restore operation. I believe you can use Acronis True Image to make an image of a NTFS shared partition and restore it as FAT-32 in one operation; if you don't have the shared files on their own partition, then you would have to create the partition in XP--then move the files to the partition--then (if you want seamless operation) mount the partition to a directory. There are instructions on how to do each of these things on Microsoft technet.
/This is a link to the main page of MS HowTos for XP--if you don't find what you need here, you'll have to wander around a bit: http://www.microsoft.com/technet/tre...o/winxphow.asp
This is a link to tell you detailed information about mounting volumes--it is for Win2000 but applies to XP (You can mount any supported filesystem to an empty NTFS folder--then export/share it over the network, to make accessable for writing by Linux or earlier versions of Windows--like 98se): http://www.microsoft.com/windows2000...f_fls_ogex.asp
Maybe after the release of the "Microsoft File System" (or what ever they call it) for the next O.S. they will stop making changes to NTFS and we will have "ready for prime-time" writing to it. Until then, leave it as a read only situation--AFAIK.
BTW: Mounting a volume (partition) onto an empty directory has been possible since at least Windows for Workgroups. But there is no tool to do it that I know of; it is done with a combination of an entry in win.ini and a registry edit. (Well, that is how I always did it. There may be another way--I just don't know it. I vaguely remember being able to do it on OS/2 and maybe DOS as well.)