|I get the feeling the OP is trying to create a wireless network from their PC to connect to with their "mobile" (phone/pad/laptop ??)|
If that is the case Subodh I would highly recommend you purchase a wireless SOHO router and plug the internet in to it and the PC in turn, into a LAN port on the router. Create a wireless network and connect your "mobile" to that.
This would serve two purposes.
1) provide protection for all devices behind it (on your LAN) from intrustion
2) provide a much easier method for creating a wireless LAN in your home
If you can't/won't or don't want to buy a router then you could try using windows ICS (internet connection sharing) to create the WLAN. If you opt for going that route, there's a ton of guides and tutorials out there that will help you do this.
I would highly recommend buying a SOHO router instead though.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.