VirtualBox on Win 7 Bridge Connection

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http://serverfault.com – I run a Win 7 host system with VirtualBox 4.2.10 installed. On VB, there is a CentOS 6.3 with an Apache. Now, from my VirtualBox I want to access the internet to use yum, wget aso. and from my host I want to reach my Apache instance. I think this setup is pretty common, but I can't find a way to figure it out correctly. What might be of importance is that I use WLAN. What I did is set my VB NIC to bridged with the name Intel Centrino Advanced-N 6230. The adaptor type is Intel Pro/1000 MT Desktop (82540M). Promiscuous mode is on deny and the cable is connected. In my global settings, I hav (HowTos)