Partiton Magic "should" do what you want, it does work with ext3 not just ext2. Ive used it before to resize & move linux partitions with out any problems, so you should be fine.
Free partition manager software for Windows PC and Server. Resize existing volume safely and perform a variety of disk partition management operations. Clone disk partition to migrate operating system ...
Drive Image or Ghost can move WIN2K partitions. You need to edit your boot.ini file to point to the new partition location.