hello... just recently upgrade to 4mb... after upgrade,still using my old billion modem but that time the connection not stable... call tm n they said billion modem cant support 4mb,advice use the innacomm 3400V... now using it,the connection more stable but cant find a way to port forward it... planning to get a modem since i oledi have a router... got any recommedation for a cheap modem that can support 4mb?