Rachel,
If the phone won't restore from DFU mode (and yeah, you are doing it properly from the vid), and it isn't a USB/computer error (since you tried multiple machines), then the phone is simply fubared. Sadly, you are unlucky enough to have it fubared with the custom graphics on it...
Last resort is trying an iTunes 7.5 install which some claim helps, but otherwise the phone is dead.
Probably not even pwnage related since it just happened out of nowhere a couple of days after you pwned, right?
Bad luck, it happens to us all.
As for money for a new phone: you are a girl. You have a sweet voice. Just put up a video or website asking for 1$ donations and tell your sad sad story and how it broke your heart. You'll have the money towards a new phone in 1 day...
Leah Culver did that and got a new MacBook.
I am serious. You are woman in a sea of male geeks. Use it to your advantage
"Please help me buy a new phone, this is me crying over my broken one... send 1$ to this PayPal account."