I have just signed up for VFX and was wondering if my setup will work. My plan is to have my DSL with vodafone and use their modem/router. I have a SPA2102 for use as my VoIP device. this will be plugged into my vodafone router. VFX only wanted the MAC address of the SPA2102 in order to set it up - will this work, or do I need to set up port forwarding, etc on the VF router??