Hi Rolf
The possible bad news is the chipset involved as ACPI support - needed if you want to use more than 1 cpu core - seems to be a bit lacking for AMD/ATI chipsets at the moment.
Not sure if the current ACPI package (v3.10 - later than the RC5 package) improves on that support... Guess you could install RC5 then update the ACPI drivers and see how it all works - or not.
It might be worth your time investigating ACPI support here
http://svn.netlabs.org/acpi/ - click on the View Tickets link
The HD2600 graphics card should be supported by both SNAP and Panorama; you would need to set SNAP to use VBE (VESA) mode rather than the accelerated driver though.
Hope the above is of use.
Pete