Requesting urgent assistance if I may?

Attempting to connect to an Ubuntu machine using an MinMG compiled virsh on a Windows Vista machine.  Using insecure TCP simply to prove a concept to a client.  However, cannot connect; situation as follows:

Edited /etc/libvirt/libvirt.conf as follows:

listen_tcp = 1

auth_tcp = "none"

Edited /etc/default//libvirt-bin as follows:

libvirt-opts="-d -l"

Running virsh on Vista client fails as follows:

$ virsh -c qemu+tcp://192.168.1.101/system

error: unable to connect to libvirtd at '192.168.1.101': errno=10061

error: failed to connect to the hypervisor

Running virsh on Ubuntu server fails as follows:

$ virsh -c qemu+tcp:///system

Connecting to uri: qemu+tcp:///system

error: unable to connect to libvirtd at 'localhost': Connection refused

error: failed to connect to the hypervisor

Indeed, with libvirt-opts="-d -l" in etc/default//libvirt-bin the 'default' command also fails:

$ virsh -c qemu:///system

Connecting to uri: qemu:///system

error: unable to connect to 'var/run/libvirt/libvirt-sock': Connection refused

error: failed to connect to the hypervisor

Suggestions very welcome...

Tim McLeod