Hey, lebasti80, thanx a lot for your help.
Unfortunately...it' doesn't work, again...
I removed all the ATI*.kext, installed the provided package,
removed Extensions.mkext, kextcache-k'ed the thing,
repaired the permissions through the terminal.
Nothing, god damn, nothing.
This time there is neither a black, nor a blue screen.
Whatever to use to boot with - -f-v, -x -v,
it gets stuck at this section:
can't get time from time.euro.apple.com
And that's it, it doesn't get any further than this.
It won't load the desktop even in safe mode.
Swapping the position of the DVI-to-D-Sub adapter
from one DVI-port to another has also no effect at all
The system installed is XxX's 10.5.6 (THANK you man, awesome release !)
I might switch back to a lower version, and try again.Dunno what else to do...
Thanx a lot, nevertheless.
It seems we the AGP-possessers of this cursed card won't have luck