I have a Brother Multifunctional MFC-7440N connected to a router with Wifi, also I some computers with win xp and one with win 7, the thing is on win xp all works fine. but win 7 after dissabling windows firewall, eset firewall and do lot of stuff such hack the wireless card all computers connect through WiFi. the scanner over network is not working. it executes the software start scanning but the software stay on receiving data from scanner. Thing that never happens.