Neil - First, de-activate the license on the existing machine from Help > Licensing and activation > [De-activate]. Then use the same key to activate a new Omniscope installation on a different machine...simple! Note that organisations which have not yet 'whitelisted' our services.visokio.com activation server domain on their network firewall will not be able to do this as simply until they chase their network administrators to enable direct communication with our servers.