My notebook dual boots Ubuntu and Windows.  Sharing files between the two systems has historically been an issue.

I just upgraded to version 7.04 - Feisty Fawn.  While opening a file in The Gimp, I noticed an extra hard drive listed in the dialog.  It was my Windows NTFS partition.  Sweet!  The file system mounts read only by default, but write support can be enabled.  More information can be found here.