PD6 - how to forbid it to swap out guest RAM?

Hi,
VMware Workstation on Windows has configuration setting 'Allow most/some/none of virtual machine to be swapped' which sometimes helped if it is known that guest really need all allocated memory(even if this means that some memory from other apps on host will be swapped out).

Is there way to do same(disable swapping of guest's RAM) in PD6?(except disabling swapping system-wide on mac os x - this is a little too much)

Mac Pro, 8 Gb of RAM, Lion(running from SSD), guests are Linux and Win7(not on SSD)