Where can I find a socket a to p4 heatsink adaptor?

Hi,
I want to use Thermalright's SLK-800 cooler on my 2.26b processor. I know that the SLK-800 is designed for socket a/423 processor, so how can I make that heatsink fit my p4 478 processor?

Thanks A Lot,
Andy

Take the old adapter off the board and stick in the new heatsink.