I installed VMware Fusion 3 to my Mac (running 10.5.4), and I am trying use it. But, I usually set NAT/HostOnly adapters' address to somewhere 10.0.0.0/8 range (e.g. usually I use 10.0.80.0/24 for vmnet8) for avoid collision with the future changes on real network (which falls into 192.168.0.0/16 range).
Under Linux, I can use vmware-config.pl, it asks me what I want, I specify, ok.
Under Windows I open the correspondent dialog, choose a correct adapter, specify, ok.
Under Mac... I don't know. How can I specify it?
To avoid misunderstands: I asks the Mac (host) side, not the virtual/guest machine side.