Since a router doesn't need a phone, it's not a router. Most likely it's a modem-router combination. And I assume that it's an ADSL-modem, not a cable or satellite modem. That makes it doubtful, because it might have Virgin-specific settings, like your user code or the fixed IP-address they gave you to identify you.
Or maybe your Bahama ISP only allows his own modems or doesn't give the right instructions about configuring this one or Virgin blocked configuring outside their own standards.
Does anyone know; would it be possible for me to use a UK wireless router hub in the Bahamas, where the phone and power supplies are to US standards? I was thinking of using my Virgin Super hub, as apparently Virgin don't need it sent back to them after termination of my contract.
I am aware that I will need a power adapter, plug adapter and probably a phone socket adapter(?).