Hi there, I have a ZXDSL 531B router from ZTE. I'm a network newbie here. Now here's the setup for the DSL router with 4 LAN ports, which all are connected to different PCs. And this happens to be the ONLY source of internet to all of us. Here's my needs, I want to control EACH LAN port speed, as it can be shared equally & not one stealing most / all bandwidth & rest left begging . Every computer uses Windows 7. Please help!