From what I've read the Kernel should have the driver for this wireless card. Intel Pro Wireless 3945ABG Rev2.
Down Below I Noticed wlan0 IEEE 802.11abg ESSID:"", I tink having nothing between the quotes after ESSID:, this may be the problem, In slackware 12.1 I'd just Install it and edit the network file and have wireless working, but I'm not sure where that is in Kubuntu 8.10, it is not in the same place in the file manager.
jason@Linux-Laptop:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:15:c5:4b:4d:96
UP BROADCAST 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)
Interrupt:18
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:28 errors:0 dropped:0 overruns:0 frame:0
TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1648 (1.6 KB) TX bytes:1648 (1.6 KB)
wlan0 Link encap:Ethernet HWaddr 00:18:de:17:54:b3
UP BROADCAST 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)
wmaster0 Link encap:UNSPEC HWaddr 00-18-DE-17-54-B3-00-00-00-00-00-00-00-00-00-00
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)
jason@Linux-Laptop:~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11abg ESSID:""
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Tx-Power=15 dBm
Retry min limit:7 RTS thr
ff Fragment thr=2352 B
Power Management
ff
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
pan0 no wireless extensions.
jason@Linux-Laptop:~$