Debian Lenny on PowerMac G4 MDD Dual 1,25 GHz

I got a PowerMac G4 MDD Dual 1,25 GHz. The Grafic Card is an ATI Radeon 9000 with 64 MB.
In the PowerMac is already Installed a Sonnet Aria Card for Wireless Connection.

Installing Debian Lenny from the Net-Installer takes not more than 30 min.
At the end I have four issues:

1. The Installer detects a Single Processor

I need just to install the SMP-Kernel

# uname -r
2.6.26-1-powerpc
# aptitude search linux-image-2.6.26-1-powerpc-smp
# aptitude install linux-image-2.6.26-1-powerpc-smp

After rebooting the computer, the second processor is working correctly

2. There is no sound

Also here the solution is easy

Loading the module for it

#modprobe snd-powermac

Test if it works: System > Sound

Set the module to be loaded during start up adding it to /etc/modules

nano /etc/modules

3. There is no Wireless Connection with Sonnet Aria

The Sonnet Aria is detected running 'lspci'

Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)

Ok, Broadcom... We need the Firmware for it.

I edited the /etc/apt/sources.list to add 'non-free' to my repositories, and then I downloaded the 'b43-fwcutter'

Why it is not installed by default? You get the answer when you install it. Aptitude asks you:

'The bcm43xx driver needs extracted firmware - which cannot be shipped - to be working. This firmware can be automatically fetched and extracted as part of installing this package.Fetch and extract firmware?'

Yes! I reboot and the module b43 is loaded.

4. My DVI Monitor shows altered colours

TO BE CONTINUE