Going back to the original question...
I am doing a theft recovery, so the wires at the head unit were butchered. I am going to just replace all wires that have to do with the stereo system, and the method I am going to use to get wires to the door speakers will work easily for you- IF AND ONLY IF you aren't wanting to keep the original factory wiring in place to facilitate returning the vehicle to stock later.
Anyway, I'm going to run the speaker wires along the door jams like a normal installation. On the passenger side, the amp power wires will run up the pillar and run up high to keep away from the speaker wires.
Now, down to getting the wire through the accordian boot- as I said, I am not keeping factory wiring, so if you plan to, this method won't work.
While running the speaker wires, leave enough wire at the speaker ends to be able to go up to the accordian boots, go through them, and reach the speakers. Once you have done that, cut the factory speaker wire behind the boot (on the pillar side) and leave enough wire hanging out of the hole for the boot to attach your new wires. Now, tape the old wire to the new wire. Tape it good, you don't want it coming apart mid-way through the boot. Next, get inside the door, grab the factory speaker wire and pull slowly. It will pull out the old wire while pulling through your new wire.
If you are planning to keep your factory wire intact, a cloths hanger is the only way I can think of, but be careful not to damage the insulation on the other wires running through there- a short caused by damaged wire casings inside the accordian boot will be next to imposible to locate later on down the line.