Every once in a while i get this message in Windows XP VM “Network connection has limited or no connection”. Some people suggest to turn your VM settings to NAT. However, this was already set to NAT. To fix the problem, quit VMware, delete the plist files in your ~/Library/Preferences/

com.vmware.fusion.plist
com.vmware.fusionDaemon.plist

This should restore your network connection.