TNX to the developers Stuff, nothing easier than installing GAG. Approximate 3min - it worked ;-)
I use GAG within FreeBSD 4.8, 5.1 and Windows 2000 on the IBM Thinkpad 460e Laptop.
Possibly it would be fine to be able to boot from CD too, but (well), Rom hasn't been build on
one day :-D We'll see in future...

And people <insert_your_name_here> who complain about "lost everything":
Who is testing installation on live systems deserve failure.
Especially without existing extended knowledge on Boot Process and Partitions...
The others didn't complain, just restored their partions data :-))