I have an XServe G5 that I am trying to fresh install 10.5 server on remotely. The problem is I can't get to the boot menu to choose a different startup disk. To top things off, I accidentally put it in network startup mode, and don't know how to get it out. I have tried holding ALT on my keyboard (Windows) at different times during the startup, but no matter what I do I can't seem to get it to take me to the boot menu. When do I hold ALT? What am I doing wrong?