how to send a sms

Question

Hey guys,Im currently a I.T student doing my final year,Im doing a project that needs to send a basic text message(sms),can anybody help me with the source code or a working program.Im using asp.net C#.I know you need a gateway or from what i heard you can use your phone aswell.I would be very gratefull if someone could help me because i am struggling to code it myself.
Thanks
Regards Kiran