Personally I found Belkin routers a bit strange to setup; Netgear have an easier system, in my opinion. If you still can I'd recommend changing to Netgear and trying that -- you may find it easier too.
Otherwise, you want to do these things:
- if on ADSL broadband (though phone line), I assume you have a router+ADSL modem in one.
- connect your microfilters to every phone socket that's in use, phone, router, whatever.
- turn all computers off
- plug in router and turn on. if already on, then restart it (usually little button on bottom, recessed).
- connect one of the computers to the router with an Ethernet cable, and turn on that computer. go to the setup page (that 192.168.2.1 page in internet explorer -- it varies with router brand), and enter your ISP username and password. you may also want to set up your wireless settings while here too. change the wireless network name (SSID), enable wireless encryption (WPA-PSK), and set it to a random password (write it down somewhere safe), and also change the router login name and password (the thing you typed in intially -- admin:[blank password] perhaps).
- now, connect and turn on other computers. they should hopefully all work too.
- any wireless computers will need require you to go into control panel and the wireless setup icon... it'll scan for names of wireless networks (choose yours), and then ask you for your WPA password. then it should work
seems quite confusing, but it's not that bad really.