oh...just remembered and forgot to post in my comments above. You cannot
install vmware tools via the VM->Install VMware Tools... menu. It won't let you on "guest operating" systems - only works for Microsoft installs
Any else thinking of installing Solaris10 within vmware will need to edit their *.vmx config file for Solaris10 and add the line paevm="TRUE"
before you power-on.
Don't bother with Solaris9. I haven't got graphics working on that yet...I'm left in console mode at present