how to resize a vm (vmware fusion)

Hi all,

i’ve got vmware fusion installed on a mac server leopard
it has a centos installed with about 20 GB drive.
i need to resize such a drive to 100 GB
i looked around and tried using vmware converter standalone.. though whenever i copy my VM from mac to windows (convert only works on windows/linux) and try to import the vm into the converter.. it gives out an error showing that the vm is corrupted..

i tried doing it manually using vmware-vdiskmanager though whenever i issue the command (in tht script’s directory) it says that such a command not found…

can anyone help me out ?