wireless connection issue

[G.]

I am in France having trouble connecting to a particular wifi device.
Called a Freebox.  My wireless adapter can connect to other wireless
devices except the one in this flat (which I connect to with a cable).
 I can connect with Windows7 (wife insists on using).  So there is
nothing wrong with the device, I should say.

I say I can connect to other wireless devices because I did so in
Spain just a few days ago.  I have a list that comes up in this flat
that i show I connect to but can not seem to actually go anywhere.

~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     802.11bg  ESSID:"Bouygues Telecom Wi-Fi"  Nickname:"rtl8191SEVA2"
          Mode:Managed  Frequency=2.412 GHz  Access Point: 02:1F:9F:BB:80:CA
          Bit Rate=36 Mb/s
          Retry:on   RTS thr:off   Fragment thr:off
          Power Management period:0us  mode:All packets received
          Link Quality=68/100  Signal level=-67 dBm  Noise level=-104 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

vboxnet0  no wireless extensions.

I am connected here to Bouygues telecom but I can not access the internet.

When I search for Additional Drivers I do not show proprietary drivers
in use.  I thought Realtek would show up on the list.  I would
reinstall if I could.

sudo lshw -C network
[sudo] password for peg:
  *-network
       description: Wireless interface
       product: RTL8191SEvA Wireless LAN Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci at 0000:02:00.0
       logical name: wlan0
       version: 10
       serial: 70:f1:a1:c0:76:dd
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet
physical wireless
       configuration: broadcast=yes driver=rtl819xSE
driverversion=0017.0507.2010 firmware=63 ip=87.90.161.102 latency=0
link=yes multicast=yes wireless=802.11bg
       resources: irq:16 ioport:3000(size=256) memory:d3400000-d3403fff
  *-network
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci at 0000:03:00.0
       logical name: eth0
       version: 02
       serial: c8:0a:a9:c9:d2:7a
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list
rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd
autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169
driverversion=2.3LK-NAPI duplex=full ip=82.239.101.168 latency=0
link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:40 ioport:2000(size=256)
memory:d1410000-d1410fff memory:d1400000-d140ffff
memory:d1420000-d142ffff

My system is up to date (Ubuntu Natty).

When I installed Natty I did not have access to a wired connection.  I
did a fresh install (not an update) after I used the Live CD (actually
USB) to connect to the internet.  Someone wrote that this would allow
you to access your additional drivers with the wireless device,
whereas if you install first then you need a cable connection.  Not
sure if this matters.


If you need any additional info please let me know.  I am 6 hours ahead of EST.

thanks


gary