MacBook Air (Late 2008) WI-FI no hardware installed

Last week all was well...On Friday I learned that the FBI turned off servers that were responsible for DNS changes.  I now believe that I was using a rouge server.  My wifi no longer works.  I have rebooted and reset the PRAM and NVRAM as well as resetting the SCM. 
I have Lion 10.7.4 for an OS.
Any ideas short of a trip to Apple???
Thanks in advance...

You have made a great effort to help me with this problem. Unfortunately the first thing the recovery does is try to get a broadband connection   Without that connection the reinstall will not proceed.
So we are now taking the Mac to the Apple store for a look see.
Thanks again for all your time and effort.  I will let you know what they say and do.

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  • Macbook Air late 2008 running extremely slow

    I just bought a Macbook Air late 2008 online & when i recieved it it had been wiped out and set back to it's original favroty settings. The battery is completely dead so it must be charged at all times. Everytime I use the laptop it is extremely slow & laggy. When opening apps, typing, watching videos, everything. I upgraded to the new Mavericks software available at apple.com hoping it would fix the problem but it didnt, & the laptop is still just as slow. Also everytime i turn the laptop on the date & time are set back to Jan 2008. I am a new mac user & I have no idea how to fix this problem.

    I just bought a Macbook Air late 2008 online & when i recieved it it had been wiped out and set back to it's original favroty settings. The battery is completely dead so it must be charged at all times. Everytime I use the laptop it is extremely slow & laggy. When opening apps, typing, watching videos, everything. I upgraded to the new Mavericks software available at apple.com hoping it would fix the problem but it didnt, & the laptop is still just as slow. Also everytime i turn the laptop on the date & time are set back to Jan 2008. I am a new mac user & I have no idea how to fix this problem.

  • TS1388 Upgrade macbook air late 2008 to mavericks not working

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    That is one heck of a post for a newcomer here. Your instructions worked like a charm, with one exception:
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    http://support.apple.com/kb/PH14222?viewlocale=en_US
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