[ubuntu-uk] wlan problem

Hello all: I'm new to Ubuntu, but having a ball. I have an HP omibook xe4100 that dual-boots xp and ubuntu. I use a Belkin FD6020 pcmcia card to connect to my wireless router. It's ok in xp, but in ubuntu I can't get it to work. The little light tries to come on but never really does - just tiny blinks during boot-up or configuration with System<Administration<Networking. I've got ndiswrapper installed and the Belkin6020.inf file installs ok. Here's some info:

brian at thefergies:~$ sudo cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# This is a list of hotpluggable network interfaces.
# They will be activated automatically by the hotplug subsystem.
mapping hotplug
        script grep
        map eth0

# The primary network interface
iface eth0 inet dhcp

auto eth0

iface wlan0 inet dhcp
wireless-essid easynote
wireless-channel 11
wireless-mode managed
wireless-rate 11
wireless-txpower 20

auto wlan0

Also:

brian at thefergies:~$ sudo ifconfig
eth0      Link encap:Ethernet  HWaddr 00:C0:9F:0A:A1:0B  
          inet addr:192.168.1.33  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::2c0:9fff:fe0a:a10b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1317 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1424 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:741384 (724.0 KiB)  TX bytes:137373 (134.1 KiB)
          Interrupt:11 Base address:0x1c00 

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:8154 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8154 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:2425891 (2.3 MiB)  TX bytes:2425891 (2.3 MiB)

wlan0     Link encap:Ethernet  HWaddr 00:30:BD:4E:33:D6  
          inet6 addr: fe80::230:bdff:fe4e:33d6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Memory:f800000-f800024 

So nothings travelling through wlan0.
Any ideas please on what I can do next?
thanks in advance
brian