1. Create a WiFi share
Step1: Run cmd with administrator privileges
SETP2: On the command line, enter Netsh wlan set hostednetwork mode=allow ssid=[your wifi Name] key=[your WiFi Password]
Step3: Set up a shared network to virtual WiFi
2. Turn off WiFi sharing
CASE1: Turn on wifi sharing, run command line with administrator privileges, enter netsh wlan start hostednetwork
Case2: Turn off WiFi sharing, Run command line with administrator privileges, enter netsh wlan stop hostednetwork
3. Remove WiFi share, Run command line with administrator privileges, enter netsh wlan set hostednetwork mode=disallow
4. Replace the WiFi share name or password, and create a command like, have administrator rights to run the command line,
Enter Netsh wlan set hostednetwork mode=allow ssid=[new wifi Name] key=[new WiFi Password]
WiFi sharing related settings under Win7