I've got Partition Magic. I've used it, and it works, but you do have to be careful.
Another alternative might be to see if you or a friend has an old hunk of junk obsolete computer laying around. Format that under DOS, or maybe it already boots under DOS. You can't even give away old 286/386's. Most people just throw them in the trash. You might find one at a thrift store for a few bucks.
