It's so easy, anybody can do it.
1) Select destination carrier: T-Mobile Virgin Mobile AT&T/Cingular Sprint Verizon Nextel
2) 10-digit destination cell number:
3) (max 160 characters)
4) your email address: (recipient can reply to this email address via sms)
5) Hit this button
Note: The recipient may be charged for an sms message by his/her wireless carrier. This site does NOT charge for sms.