If you need a Solaris 8 (5.8) running on ESX server you may install OS without any error. But when you try to install VMware Tools after OS installation, strongly probable, you will get an error like this:
./vmware-install.pl
Setup is unable to find the “update_drv” program on your machine. Please make sure it is installed. Do you want to specify the location of this program by hand? [yes]