Its a notebook: Acer Aspire 5742G, I got it around November last year. (If you need information about the notebook, look for the 8GB Ram with Nvidia GF 540M Version)
System: Windows 7 HP 64 Bit
My WLAN Adapter:
Atheros AR5B97 Wireless Network Adapter.
So I enabled the shared internet connection in the options of the Atheros Card and choosed Lan-Connection as the connection to be shared.
(My Laptop is connect to the internet by ethernet cable).
So now I have a second Wireless Connection, called: Microsoft Virutal WiFi Miniport Adapter.
After finishing these steps, when I look into the options again, no shared connection is actiavted/chosen/ w/e!