F*in A... Guess I HAVE to F*in get vista 64 now damit... :-(
from:
http://www2.ati.com/relnotes/catalyst_83_release_notes.html
CrossFireX™ (Quad) Support 3 or 4 GPUs in CrossFireX™ Mode
This release of Catalyst™ introduces CrossFireX™ Quad support. Users with any combination of a ATI Radeon™ HD 3870, ATI Radeon™ HD 3850, and ATI Radeon™ HD 3870 X2 graphics accelerators running with 3 or 4 GPUs will be able to run in CrossFireX™ Quad mode (when used in a CrossFireX™ compatible PC). CrossFireX™ Quad will deliver significant performance improvements in a number of applications. Users can expect to see further DirectX 10 QUAD CrossFireX™ performance improvements in future Catalyst™ releases.
Users are now able to run in CrossFireX™ (Quad) mode while running in extended desktop mode on the Windows Vista desktop
--------------------------------------------------------------------------------
Note: CrossFireX™ (Quad) is only supported under the Windows Vista operating system