Need help with 9800P heatsink design .

[timisoarakill]

Hi , i have a nice cooper heatsink who fit perfectly the 9800 but it does not have any holes for attachment and i wonder if somebody can make me a simple design on where exactly to dig the 4 holes with the exact distance betwen the holes so i can drill this without having to butcher the heatsink with multiple try .
Thx a lot for your time and help .