Macbook Pro died and now won't connect to the internet

I just got home from college and my Macbook Pro died while I was using it because I couldn't find the charger in time to plug it in (stupid mistake that I never ever let happen usually). After I found it, plugged it in, and started it up again, the date and time were messed up on the computer. I reset them to normal and tried to connect to the internet using my old settings, but it hasn't connected.
I've tried a lot to try and fix it so far and it still won't connect. Other computers and devices (HP and Dell laptops, iPod touches, PS3) that my family have and use all work and connect to the internet fine.
I've tried to run the Network Diagnostics and after plugging in all of my settings and information, it says that it can't fix it. Next to it on the left, the Airport, Airport Settings, and ISP are all green...but the Network Settings is yellow and the Internet and Server are red.
I've deleted my internet settings and tried recreating them and that hasn't worked either. I have also tried the Assist Me portion to make a new connection - no luck there.
I've also tried resetting the Macbook Pro and the router (an Actiontec router for Verizon FIOS) multiple times and that hasn't worked either.
I unfortunately can't use Time Machine either because I don't have an external hard-drive and haven't set it up.
I just don't really know what to do at this point. Hopefully someone can help me out!

Same problem--hoping to get Apple's attention by throwing my hat in the ring with everybody else.
Things tried (now approaching 2 weeks of failure):
Deleting "Airport" Connection, Adding/Restarting/Re-adding/etc.
Archive Install
Erase & Install (full reinstall done by Genius)
Card Replacement
Bluetooth Replacement
Zapping the PRAM
Trying different connections/routers/locations/connection types/etc.
Visited Genius bar 4 times now.
Have been without the computer longer than I've been with it.
Trying to change over from a horrifically bad Dell to a refurb Mac worked once before...though I've come to believe: It's not the refurb, it's not the hardware, it's not the settings, it's not the router, it's not the install, it's not the associated software, it's not the connection, it's not the Super Moon that comes up tomorrow...It's a hardware issue as this has been happening since I opened the computer out of the box, and we have an identical computer running identical programs on an identical network with the identical updates and NO problems whatsoever--I'm assuming the innards may have been cheap'ed out somewhere to save a buck or a connector is faulty after a particular build date?
Full symptom list (in no particular order):
Connection Timeout
Connection Drop
Not recognizing Airport
Card Recognition but endless connection time
IP non-recognition
Random re-connect
Indication of connection without transmitting/receiving data
Frustrated Mac lover trying to convert a Dell user...
APPLE, WHERE ARE YOU!?

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Thanks for using Apple Support Communities. These articles have troubleshooting steps for issues with Wi-Fi on Macs and iOS devices respectively:
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/ts1398
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Microsoft Windows 7 x64 Ultimate Edition Service Pack 1 (Build 7601)
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QuickTime 7.7
FairPlay 1.12.20
Suporte para Aplicativos Apple 2.0.1
Biblioteca do Atualizador do iPod 10.0d2
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DLL do Driver de CD 2.1.1.1
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MusicID da Gracenote 1.9.1.102
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NVIDIA, NVIDIA GeForce 9500 GT
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Gateway Padrão: 0.0.0.0
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A Cessão Expira: Wed Dec 31 22:00:00 1969
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I am having a problem that I cannot figure out. I've searched Google as well as the Apple discussion boards, and I have found nothing that addresses my problem.
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Macbook Pro died and now won't connect to the internet

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