Sir ,
I Have One Doubt...
I Installed FOUR Operating System on Oracle Virtual Box And I Tried To Make Just a Simple WorkGroup.....

1 ) Windows 2012 Server          IP Address      192.168.1.1       Subnet Mask      255.255.255.0
2 ) Windows 7                           IP Address      192.168.1.2        Subnet Mask      255.255.255.0
3 ) Windows 2008                     IP Address      192.168.1.3        Subnet Mask      255.255.255.0
4 ) Windows 2003                     IP Address      192.168.1.4        Subnet Mask      255.255.255.0

Default Gateway And DNS is Blank.....

I Changed Network Adapter Settings on Each Machines :

Network Adapter : Host Only Adapter
Promisecuous MODE : Allow All

Afterthat Everything Working Fine Except PINGING.When I Try To Ping Each O S Showing That " Request Timed Out " . But Folder Sharing , Printer Sharing Etc. Everything Working is Fine...But Only The Problem is Pinging Time Showing Request Timed Out. Could You TELL Me What is The Reason ? I Am Confused Now......If ANYONE Knows About This Problem PLEASE Help Me...Thanks in Advance.......