I needed to shrink a number of VMWare Workstation 9 virtual disk files (VMDK files) from the command line.
VMWare Workstation 9 doesn’t include the vmware-mount.exe utility, which is needed to mount the drive for preparation. It is also not included in the Virtual Disk Development Kit 5.5, but can be found in version 5.1. You can download this from here, although it may possibly move. Searching the vmware support site for VDDK 5.1 windows may help find it.