you can call qtel help desk for support. anyway if it is a linksys wag200g it is a nasty one. you get disconneted at top speed. you can find more the articles in the internet. the dns not needed to set up it will assigned automatically 8/35 and pppoe is a correct setting. but dhcp should configured for pcs to connect. the best thing you can do is connect your old modem ethernet to wifi router ethernet port and dissable dhcp from wifi router. then modem will give dhcp and internet and wifi router gives wifi connetvity. this works faster