Hi TECH198 ,
Welcome to Fusion community.
I am running two virtual machines in host only mode. (one OS X and the other Windows 2003 server), I can ping between the two just fine, but i cannot ping Mac.
That's as expected.
If you want to ping you Mac from host-only VM, you could use the ip address of vmnet1. You can get that address via 'ifconfig' command on your Mac. Hope that will help.
Thanks,
Nancy