Here are instructions for sending a text message from your computer/PC to another Verizon Wireless number. Messages sent from the Verizon Wireless website can only be sent to other Verizon Wireless numbers. Navigate: My Verizon > My Plan & Services > Send a Message. If necessary, register for an account. In the To: field (located on the right) enter up to ten Verizon Wireless mobile numbers and/or contacts. Enter the message in the Your Message field (located on the right) then click Send (located at the bottom). The text message can be up to 140 characters in length.