3 issues, please help me

[deguz]

Hi all!
I'm new at this list, so maybe other people have already talked about
these issues. If so, i apologize.
Well, then let's begin.
First of all, i use Kubuntu 7.10, up to date version.

First one:
Short version: wlan.
Longest version: I have a hp compaq 6720s notebook, and i can't get
wifi working. I already tried with ndiswrapper and bcm43xx too. It
didn't work with any solution. Now ndiswrapper is installed, and
everything seems to work fine, but wlan doesn't work. It seems the
driver can't reach the hardware. The wlan button isn't working.
Output of iwconfig:
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11g  ESSID:off/any
          Mode:Managed  Frequency:2.462 GHz  Access Point: Not-Associated
          Bit Rate:54 Mb/s   Tx-Power:32 dBm
          RTS thr:2347 B   Fragment thr:2346 B
          Power Management:off
          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
Output of iwlist wlan0 scan:
wlan0     No scan results
But it's not correct, there are wlan networks here.
dmesg says:
dmesg |grep ndis
[   16.680000] ndiswrapper version 1.50 loaded (smp=yes, preempt=no)
[   16.772000] ndiswrapper: driver bcmwl5 (Broadcom,10/12/2006,
4.100.15.5) loaded
[   16.780000] ndiswrapper: using IRQ 17
[   16.988000] usbcore: registered new interface driver ndiswrapper
dmesg |grep wlan0
[   16.984000] wlan0: ethernet device 00:1a:73:9b:84:8c using NDIS
driver: bcmwl5, version: 0x4640f05, NDIS version: 0x501, vendor: 'NDIS
Network Adapter', 14E4:4311.5.conf
[   16.984000] wlan0: encryption modes supported: WEP; TKIP with WPA,
WPA2, WPA2PSK; AES/CCMP with WPA, WPA2, WPA2PSK
[   77.568000] ADDRCONF(NETDEV_UP): wlan0: link is not ready
ndiswrapper -l says:
ndiswrapper -l
bcmwl5 : driver installed
        device (14E4:4311) present (alternate driver: bcm43xx)
lspci |grep Broad
10:00.0 Network controller: Broadcom Corporation BCM94311MCG wlan
mini-PCI (rev 02)
I think the problem is with the wlan button, it is blue (it works)
until GRUB loads, but when GRUB loads, it turns off, and i can't turn
it on. I really need to use wlan, please help me.

Second one:
In this laptop there is an intel integrated video card, and i can't
get compiz working.
when i try to load compiz, the top of the windows' (the title bar) go
away, and i can't control them, they stuck onto the place where they
were.
lspci |grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile
GM965/GL960 Integrated Graphics Controller (rev 0c)

And the third one:
I think i'm not alone with this, the brightness up and brightness down
button don't work. I can set the brightness up and down with Power
Manager, but not with the buttons. when i tried to set to those
buttons as a shortcut to another command, the shortcut handler didn't
see these buttons.

Best regards,
deguz