Kein Airport bei Macbook Pro 10.7.5

Hallo,
habe ein Prolem. Und zwar möchte ich über WiFi zu Airport "Internet freigeben.
Normal geht man ja wie folgt vor:
1. Systemeinstellungen
2.Freigaben
3.Internetfreigabe
4. Über WLan via "AIRPORT"
das Problem ist das der Airport reiter nirgens aufgeführt ist. Weder in den Freigaben noch in Netzwerkeinstellungen.
Habe aber das AirPort Dienstprogramm im System und findet auch Internet.
Wie bekomme ich es hin das ich in den Netzwerkeinstellungen sowie in Freigabe Airport sehe.
Tech. Daten:
Macbook Pro 13" ENDE 2011
10.7.5 Mac OS.X Lion
2,4 GHz Intel Core i5
4GB 1333MHz DDR3

Welcome to Apple Support Communities
Of course not. If you want to upgrade to OS X Mountain Lion and you have got a Mid 2007 or newer MacBook Pro (you can check this in  > About this Mac > More Info), you can purchase OS X Mountain Lion at the Apple Online Store > http://store.apple.com/us/product/D6377Z/A/os-x-mountain-lion
Make a backup of your files with Time Machine before upgrading and check that your applications are compatible > http://www.roaringapps.com
Unless you need Mountain Lion because of a specific reason, instead I recommend you to upgrade to OS X Mavericks, which is the most recent OS X version and it is free. You can download it from the Mac App Store. See > http://www.apple.com/osx

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