After Changing Cable Companies, Can't Connect Ubuntu 12.04, LXLE to the Internet

I hope someone here can help me to reestablish my internet service. I switched my OS from Windows XP, in April 2014, to Ubuntu 12.04, LXLE. The wireless cable worked very well from the start. I moved two weeks ago and had to switch internet providers. The technicians were unable to establish any kind of connection for me ("We do not support Linux!"). I think I am close, because there is data going back and forth via a wired connection. I may be just too inexperienced to see anything obvious. I understand that this may be a DNS problem, but I cannot solve it.

This is my output (copied from what I saw others provide for similar problems):

alice@alice-HP-d530-SFF-DC578AV:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:11:0a:95:a5:d7
          inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::211:aff:fe95:a5d7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:6149 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3291 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:749226 (749.2 KB) TX bytes:265242 (265.2 KB)
          Interrupt:20

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:4 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:240 (240.0 B) TX bytes:240 (240.0 B)

alice@alice-HP-d530-SFF-DC578AV:~$

alice@alice-HP-d530-SFF-DC578AV:~$ nm-tool

NetworkManager Tool

State: connected (global)

- Device: eth0 [Auto Ethernet] ------------------------------------------------
  Type: Wired
  Driver: tg3
  State: connected
  Default: yes
  HW Address: 00:11:0A:95:A5:D7

  Capabilities:
    Carrier Detect: yes
    Speed: 1000 Mb/s

  Wired Properties
    Carrier: on

  IPv4 Settings:
    Address: 192.168.1.2
    Prefix: 24 (255.255.255.0)
    Gateway: 192.168.1.1

alice@alice-HP-d530-SFF-DC578AV:~$ lspci
00:00.0 Host bridge: Intel Corporation 82865G/PE/P DRAM Controller/Host-Hub Interface (rev 02)
00:01.0 PCI bridge: Intel Corporation 82865G/PE/P AGP Bridge (rev 02)
00:06.0 System peripheral: Intel Corporation 82865G/PE/P Processor to I/O Memory Interface (rev 02)
00:1d.0 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02)
00:1d.7 USB controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)
01:00.0 VGA compatible controller: NVIDIA Corporation NV34 [GeForce FX 5200] (rev a1)
05:02.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5782 Gigabit Ethernet (rev 03)
05:04.0 Communication controller: Conexant Systems, Inc. SoftV92 SpeakerPhone SoftRing Modem with SmartSP (rev 01)
alice@alice-HP-d530-SFF-DC578AV:~$

alice@alice-HP-d530-SFF-DC578AV:~$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 2001:558:feed::1
nameserver 2001:558:feed::2
alice@alice-HP-d530-SFF-DC578AV:~$

alice@alice-HP-d530-SFF-DC578AV:~$

alice@alice-HP-d530-SFF-DC578AV:~$ lspci -nnk | grep -iA2 eth
05:02.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5782 Gigabit Ethernet [14e4:1696] (rev 03)
 Subsystem: Hewlett-Packard Company d530 CMT (DG746A) [103c:12bc]
 Kernel driver in use: tg3
alice@alice-HP-d530-SFF-DC578AV:~$

alice@alice-HP-d530-SFF-DC578AV:~$ sudo lshw -C network
[sudo] password for alice:
  *-network
       description: Ethernet interface
       product: NetXtreme BCM5782 Gigabit Ethernet
       vendor: Broadcom Corporation
       physical id: 2
       bus info: pci@0000:05:02.0
       logical name: eth0
       version: 03
       serial: 00:11:0a:95:a5:d7
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 66MHz
       capabilities: pm vpd msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.121 duplex=full firmware=5782-v3.13 ip=192.168.1.2 latency=64 link=yes mingnt=64 multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:20 memory:f8400000-f840ffff
alice@alice-HP-d530-SFF-DC578AV:~$

I was never able to copy the MAC address from the bottom of the router the cable company gave me into the space provided in Network Manager. The alphanumeric code on the router is different from the address (HWaddr 00:11:0a:95:a5:d7) already assigned. I cannot change it. I was curious too about nameserver 2001:558:feed::1, nameserver 2001:558:feed::2, and if that was straight.

I hope my problems are due to my inexperience, and that someone here can spot what is wrong for me.

Very appreciatively,

Alice