VMware example entry for dhcpd.conf, used for vmnets.

vmnet-dhcp

# From: http://communities.vmware.com/message/829060#829060
#
# You can add a static mapping for your VM's MAC address via NAT by editing 
# dhcpd.conf in /Library/Application Support/VMware # Fusion/vmnet8/dhcpd.conf
# 
# The syntax is:
 
# Assign a static IP to Xubuntu
host xubuntu {
  hardware ethernet 00:0C:29:XX:YY:ZZ;
  fixed-address 1x2.168.xxx.yyy;
}
 
# You must restart the dhcpd server easily by running sudo boot.sh --restart 
# in the VMware Fusion directory above.  
# If Xubuntu has the IP you want already, it should keep it.