If you would be willing to switch to Suse 9.2 professional, ACPI works out of the box. Ironically this distro just became free, you can grab it here. Its also a great distro, I ditched Fedora for it. ftp://mirror.mcs.anl.gov/pub/suse/i386/9.2/iso/
If your stuck on Fedora, it can be made to work with some hacking and custom scripts. A good resuorce to learn from is linux on laptops. Basically sleep works out of the box but theres issues with resume still and modules loading/unloading.