Can you pingthe router i.p. provided in the instructions? If not Try to find the router on your network with nmap. For example:
Code:
# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:08:C7:77:54:93  
          inet addr:192.168.254.2
So with this range of i.p. address in mind we might try something like this:
Code:
# nmap 192.168.254.*

Starting nmap 3.55 ( http://www.insecure.org/nmap/ ) at 2004-09-18 19:08 M
Host 192.168.254.0 seems to be a subnet broadcast address (returned 1 extr
s).  Still scanning it due to ping response from its own IP.
Interesting ports on 192.168.254.0:
(The 1658 ports scanned but not shown below are in state: closed)
PORT    STATE    SERVICE
80/tcp  filtered http
515/tcp filtered printer
MAC Address: 00:C0:02:CD:40:8E (Sercomm)

Interesting ports on 192.168.254.2:
(The 1653 ports scanned but not shown below are in state: closed)
PORT    STATE SERVICE
9/tcp   open  discard
13/tcp  open  daytime
22/tcp  open  ssh
23/tcp  open  telnet
37/tcp  open  time
538/tcp open  gdomap
631/tcp open  ipp

Interesting ports on 192.168.254.254:
(The 1658 ports scanned but not shown below are in state: closed)
PORT    STATE    SERVICE
80/tcp  filtered http
515/tcp filtered printer
MAC Address: 00:C0:02:CD:40:8E (Sercomm)

Host 192.168.254.255 seems to be a subnet broadcast address (returned 1 ex
ngs).  Still scanning it due to ping response from its own IP.
Interesting ports on 192.168.254.255:
(The 1658 ports scanned but not shown below are in state: closed)
PORT    STATE    SERVICE
80/tcp  filtered http
515/tcp filtered printer
MAC Address: 00:C0:02:CD:40:8E (Sercomm)

Nmap run completed -- 256 IP addresses (4 hosts up) scanned in 23.141 seconds
The router is 192.168.254.254