Want wireless ethernet access for your arduino or TI MSP? Use the TP-Link TL-WR703N as written up in the directions in the link below. These sell for around 20-30 dollars, much cheaper than a wireless shield for arduino (50 ish)
http://www.martinmelchior.be/2013/07/use-tp-link-tl-wr703n-to-send-arduino.html?m=1
http://dangerousprototypes.com/2013/07/14/use-the-tp-link-tl-wr703n-to-send-arduino-sensor-data/