Windows 7: Share your internet uplink via wireless ad-hoc network (ICS)

Scenario
You have one windows 7 device with a direct internet connection like UMTS and you won't to share the connection via an ad-hoc wireless network with another device. In my case it is a XDA neo.
Everything happens in the Network and Sharing center.

1. Properties section of the network device with the uplink:
   under sharing active ICS and re-connect the device to internet
   
2. Create a new ad-hoc network (use encryption!)
   
3. Join with another device the network
4. Set the wireless ad-hoc network location to "Home"
5. Disconnect from the ad-hoc network and rejoin (device with uplink)

The internet sharing should now work.