i don't know if "mounting" Solaris will give me the option to resize the ZFS partition, but for starters, Solaris is not "mounted": http://i244.photobucket.com/albums/gg20/nweissma/Screenshot_2.png .. although i have access to a full-featured Solaris installation.
i don't see ZFS even mentioned as a candidate for resizing: http://i244.photobucket.com/albums/gg20/nweissma/Screenshot_3.png
i have no idea what this means, but i suspect it's relevant: http://i244.photobucket.com/albums/gg20/nweissma/Screenshot_4.png
what i want to do is reduce the Solaris/ZFS partition to make room for an increase in the NTFS partition.
and the second concern is how i will resize the NTFS, because GParted is known to wreak havoc with resizing NTFS How to repair GRUB
to recap, how can i reduce Solaris ZFS and increase NTFS?
You can not shrink a ZFS filesystem.
Growing one doesn't require any special efforts - as long as the 'autoexpand' property is set it will handle it on its own when the underlying device/partition changes size - but shrinking is not possible directly due to the way it works.
The only way to do what you are aiming for is to backup the filesystem, resize the partitions, recreate the filesystem and then finally restore the filesystem data. zfs send/zfs receive will help with that but you will need somewhere to hold the data temporarily.
In relation to resizing the NTFS partition - that should be okay since the start of the partition isn't changing.