In the past I used a Linksys 54GL router (with dd-wrt) connected to an Alcatel ADSL modem. Settings: Router adress 192.168.1.1 / 255.255.255.0 Modem adress 10.0.0.150 / 255.255.255.0 Everything worked fine using DHCP server with dynamic IP adresses on PC's in LAN. Now i have received a new combined modem/router from my ISP. I have configured the stuff like this: I am not using wireless at the moment. Modem/router A (Thomson 780 wireless) connected to ADSL Router A adress: 192.168.1.254 (LAN side) /255.255.255.0 Connected the Linksys router (B) to this with the gateway cable on port 1 of router A. All my PC's still on the old router with same settings and IP adress. Set the internet connection on the Linksys router to: Static IP: Filled in gateway to 192.168.1.254 / same subnet rest was filled in automatically: DNS adresses and an internet adress 192.168.1.64 So: internet works OK LAN file sharing etc disappeared, no ping, no nothing. Probably a clash of IP adresses but I dont know what to do. I want to keep using the Linksys router because of download issues (torrents). Does anyone have a clue how to fix this? (before I go changing all kinds of adresses on wild guesses).