I need to start saying that only the 32-bit versions of those programs are freeware. There are a couple of ways for you to proceed.
If you backup your entire C partition with some drive imaging software, you can then delete the partition, re-create it where you want, and restore the drive image. The thing to be cautious about here is that the Active partition and the System partition remain the same or you could end up with the "BOOTMGR is missing" error.
Since you can't delete and re-create the C partition while it is mounted, this operation has to be done from a Recovery or Pre-install environment. This give me an idea for a possible workaround. If you boot into a 32-bit PE, you might be able to run the freeware partition manager software! That would be a neat trick -- I may have to try that myself.
Meanwhile, please post a screen shot of your Disk Management screen. Maybe it will tell us something.