Problem Connecting to Internet

I have a Wireless ADSL Modem connecting to my PC with ethernet cable. When I switch ON the wireless modem, all indicators' light are ON (Power, WLAN, DSL, Internet, Ethernet indicators).

Then I run this into terminal:

'sudo pppoeconf'

and followed the steps exactly from
https://help.ubuntu.com/8.04/internet/C/modems-adsl-pppoe.html

then I type 'plog' it shows these lines:

Jul 24 22:59:48 my-desktop pppd[14406]: Using interface ppp0
Jul 24 22:59:48 my-desktop pppd[14406]: Connect: ppp0 <--> eth0
Jul 24 22:59:50 my-desktop pppd[14406]: PAP authentication succeeded
Jul 24 22:59:50 my-desktop pppd[14406]: peer from calling number 00:90:1A:A1:15:CD authorized
Jul 24 22:59:50 my-desktop pppd[14406]: not replacing existing default route via 192.168.1.1
Jul 24 22:59:50 my-desktop pppd[14406]: Cannot determine ethernet address for proxy ARP
Jul 24 22:59:50 my-desktop pppd[14406]: local IP address 60.54.109.91
Jul 24 22:59:50 my-desktop pppd[14406]: remote IP address 219.93.218.177
Jul 24 22:59:50 my-desktop pppd[14406]: primary DNS address 202.188.0.133
Jul 24 22:59:50 my-desktop pppd[14406]: secondary DNS address 202.188.1.5

then I type 'ifconfig' :

eth0 Link encap:Ethernet HWaddr 00:1b:fc:fb:96:73
             inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
             inet6 addr: fe80::21b:fcff:fefb:9673/64 Scope:Link
             UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
             RX packets:4424 errors:1 dropped:0 overruns:0 frame:0
             TX packets:5466 errors:0 dropped:0 overruns:0 carrier:99
             collisions:0 txqueuelen:1000
             RX bytes:1657944 (1.5 MB) TX bytes:676077 (660.2 KB)

lo Link encap:Local Loopback
            inet addr:127.0.0.1 Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING MTU:16436 Metric:1
            RX packets:5981 errors:0 dropped:0 overruns:0 frame:0
            TX packets:5981 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:352866 (344.5 KB) TX bytes:352866 (344.5 KB)

ppp0 Link encap:Point-to-Point Protocol
             inet addr:60.54.109.91 P-t-P:219.93.218.177 Mask:255.255.255.255
             UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
             RX packets:7 errors:0 dropped:0 overruns:0 frame:0
             TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:3
             RX bytes:233 (233.0 B) TX bytes:54 (54.0 B)

vboxnet0 Link encap:Ethernet HWaddr 00:76:62:6e:65:74
                 inet6 addr: fe80::276:62ff:fe6e:6574/64 Scope:Link
                 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
                 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
                 TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
                 collisions:0 txqueuelen:1000
                 RX bytes:0 (0.0 B) TX bytes:804 (804.0 B)

Then I try to browse internet,but it shows page "address not found" after taking so long to reach google page.

Now I'm using the dial-up internet from a different ISP.The configuration for this dial-up internet is at /etc/wvdial.conf, as below:

[Dialer Defaults]
Modem = /dev/ttyACM0
Baud = 460800
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ISDN = 0
Modem Type = Analog Modem
Phone = *99#
Username = username
Password = password
Stupid Mode = 1

Now what I want to do is, to connect my new internet and then I will terminate the former dial-up internet account. The latter internet connection is the one with Wireless ADSL Modem, and the former is a USB Modem (phone).

I don't know why I couldn't connect internet with my new internet connection as all the configurations are correctly done. Thus kindly request assistance on this matter. TQ in advance.