if you are using windows 7 you can share your wireless connection using integrated windows hotspot.
open the properties of the network you'd like to share and enable sharing.
Enter the below command (your CMD must be open in administrative mode).
netsh wlan set hostednetwork mode=allow ssid=any key=any
then
netsh wlan start hostednetwork.
your hotspot is created you can see it in your other devices.