I tried first, exactly the way you said (without modifying anything); but my monitor kept turning off. So I added -igfxvesa via Propertree and it finally work. I choose my installation disk and begin with the installation.
After two reboots I ended up with this... (image1 attached) then it rebooted again and I got stuck in this screen (image2 attached). The more I wait on this screen, I get constant "busy timeout, (240s): registry root held busy, kernelmanagerd has not checked in".
Images.rar