Adhoc Manager allows you to configure and start your Hosted/Adhoc Network as simple as possible with a graphical user interface.

Usage:
Start the application as Administrator
Enter an SSID and password (optional, but recommended)
Click on Start
Click on "Manage Connections.." and Right Click on the Connection you want to share. Open "Properties -> Sharing" and enable the sharing for other users, select "Hosted Network" or similar to the Home Network Connection.
Connect your clients to your WiFi Network