WiFi Center in Windows 8: No Ad Hoc Network Sharing Options

Hi,
I have recently upgraded to windows 8 but now the problem I'm facing is that I'm not able to use my windows 8 laptop as wifi center, since I was able to create a ad hoc network sharing in Windows 7 but I see no such option in Windows 8. Please guide me how can I use my Windows 8 laptop as wifi center to access internet on my wifi enabled mobile handset.
Point :- I can access internet on laptop but I want to use internet on my wifi enabled mobile.
Thanks in advance.
Regards,
nick
