Well, before we get to a price, I need some help. It looks like the company that recycled these just installed Windows on them. I can't get any of them to boot to a 10.4 install DVD, they just boot to Windows, or boot to "No bootable device -- insert boot disk and press any key". I can get them in Target disk mode and tried to format the drive on my MacBook so it has nothing to boot to but the install disk, but it still shows the no bootable device screen. What should I try next?