Nikon have released an update to Camera Control Pro, now at version 2.4.0.

Support for the D3X has been added.
Windows 2000 is no longer supported.
In some rare cases, when images with file sizes of 14 MB or larger were transferred, the transferred images were corrupted. This issue has been resolved.

Download: Camera Control Pro v2.4.0 (Windows)
Download: Camera Control [...]