I'm surprised I can't find this anywhere, but is it possible to have a sleeping PC wake up when a Skype call comes in? If so, how to set it up? Using XP.
You could always use a Magic Packet utility to send the WOL command first, then after a few seconds or so (depending on how long it takes the computer to wake) send the Skype request. This would assume that either the computer is being woken from Hibernation where Skype was left running, or where Skype was set to run and log in on boot.
However, it's not just a Skype feature you are talking about here. There is far more to the concept of waking a computer using WOL. I hinted at that above, but essentially, in order to WOL, you need to communicate directly to the BIOS of the computer, not an installed program. Why? Because if the computer is "asleep", you don't have access to the installed operating system or program. You only have access to the OS and programs once the computer has booted up.