1. Install the Nokia PC Suite from the cd which you got with your nokia phone at the time of purchase.
2. After getting connected with nokia pc suite via Bluetooth or through usb cable.3. Open Nokia phone browser in My Computer.
4. Click on the which has a tooltip as create a new text message in the vertical sidebar as shown in the image below.
5. Nokia Text Message Editor will open up in which you can enter the number and type your message and (as shown in the image below).
6. After typing click on File>>Send to send the message.