I tried to update to ideneb 10.5.8 this afternoon, but failed. The pc always need reboot 3 times to get access to the mac OS before the update, maybe this is the reason I can't update it successfully, I will try to install 10.5.6 tomorrow from scratch.

Here is the update instruction:
http://www.ihackintosh.com/2009/08/update-hackintosh-osx86-1058/

Don't learn to hack, hack to learn.