You need some troubleshooting first.
First ping by ip (not name) each Win computer and then
reverse it. That is to ensure all the systems are able to
see each other.
To communicate from Windows to Vector you can use filezilla and
use the ssh protocol. This would give you a visual (GUI) for looking
at things on the Vector machine. The way to make a Linux computer
showup in Network Neighborhood would be to setup Samba.
Here is some reading for you which may help:http://www.linuxvirgins.com/networking.html