Passing along the information about this really cool utility - Alexander Gaiswinkler has created a Storage VMotion graphical user interface (GUI) for VMware.  It can be downloaded from the VMware Community Web site, here.

Alex offers the following instructions:

• Install the VMWARE remote CLI (www.vmware.com/go/remotecli) on a Windows machine to the standard path (program files...)
• Save the file vms.pl into the C:\Program Files\VMware\VMware VI Remote CLI\bin directory.
• Save the svmotionGUI.exe somewhere on the machine.
• Double click it!

Thanks to Dennis and the German VMware community site, www.vmachine.de for the screenshot.