lol. The best way if you really must do this is have a PXE server like FOG or TRK which network boot to hard drive tools and maybe preconfigure your image with SSH access for you. If you can't put a PXE server on the LAN and you actually need to do this across the WAN, there are ways to do this through stuff like Unetbootin, though you may need a preconfigured flash drive if your going to use this in the case of a failed drive. You've got all kinds of things to think about here though, like...are you going to be supporting home users with funky home firewalls blocking you out?
One other option since you seem to like to think bizarrely out of the box: Maybe you would be happier with a KVMoIP device? They can actually also let you boot to a remote ISO, thought it can be pretty fussy if you don't use external power.
http://www.lantronix.com/it-management/ ... pider.htmlYou may run into a cost issue here, bro...