Hawman, you might be able to get a Phenom with a BIOS flash. AMD's website doesn't list the Phenom as tested compatible in the K9N SLI Platinum but the K9N Neo-F (NF560) did. You might consider e-mailing MSI because I know the nForce 570 SLI chipset itself will support the Phenom.
In other news, the overclock I applied last night has proven successful and rock solid.
BTW Folding resumed after Orthos stopped in case you were wondering. CPU is now at 71.4W TDP. All stock voltages.