Should be
here.
It's a good idea to find a mirror site for any downloads.The main sites are always slowwww.
As far as installation and configuration,you may need to re-compile the kernel but I'm not 100% sure about that.Perhaps it's just a module.
This fellow had felt the need to do that.
Kernel patch acpi
HTH
lynch
BTW, welcome to the TSG UNIX/Linux forum