There are some of Programs and app which can be done the job, however I have found this tiny utility is work well for me during the period I tried. That is Virtual Router is a free, open source software based router for PCs running Windows 7 or Windows Server 2008 R2. Using Virtual Router, users can wirelessly share any internet connection (Wifi, LAN, Cable Modem, Dial-up, Cellular, etc.) with any Wifi device (Laptop, Smart Phone, iPod Touch, iPhone, Android Phone, Zune, Netbook, wireless printer, etc.) These devices connect to Virtual Router just like any other access point, and the connection is completely secured using WPA2 (the most secure wireless encryption.)
Download Virtual Router - Wifi Hot Spot for Windows 7 / 2008 R2
A step by Steps how to install and config
-Download the program and finish the installation process .
-Run the program as the picture and enter the SSID name ,Password and Click Start Virturl Wifi to begin the service.
-On the windows task bar ,have a look for the icon Green that showed the program is working properly.
First turn on your wireless of mobile or clients laptop ,smart phone and etc .
Have alook for SSID name that you have entered in the past steps.
Click Connect and put your password to log in and enjoy the service.
Save cost of expense ,no need to buy more WiFi routers devices.
Need to turn on the Server or the time and sometime it may get down and unstable.