I found a couple answers elsewhere.
Quoting from my first source:
You may or may not want to add the location of vmrun to your default
path. I chose not to as I will mostly
be interacting with vmrun through
shell scripts.
To Launch the virtual machine named VA-LAMP.vmx which is located in the
standard virtual machine directory
enter the following command into the
Terminal app.
/Library/Application\ Support/VMware\ Fusion/vmrun -T fusion start /Users/USERNAME/Documents/Virtual\ Machines.localized/VA-LAMP.vmwarevm/VA-LAMP.vmx nogui
To make this a command to launch the
headless terminal from a file on the
desktop just open text edit and enter
the following text
#!/bin/bash /Library/Application\ Support/VMware\ Fusion/vmrun -T fusion start /Users/USERNAME/Documents/Virtual\ Machines.localized/VA-LAMP.vmwarevm/VA-LAMP.vmx nogui
Save the file as plain text to the
desktop as headless.command
Now to make it executable fire up the
terminal application and type
chmod +x $HOME/Desktop/headless.command
And the second:
To enable it you need to run the following on your console: defaults write com.vmware.fusion fluxCapacitor -bool YES