things you'll need
1) Music which you'll be turning into your ringtone

2) something to edit your music with (Windows movie maker, Goldwave, etc)
I use windows movie maker to edit my music so I first go into File > Import > and select my music. Then I edit the music so its around 20-30 seconds starting and ending where I want

once your finished editing your ringtone go to File > Save Movie File and it will save it as .mp3 as long as there's no video there just the audio. (this is for windows movie maker) then just go to your email and send an email to
yourphonenumber@vzwpix.com and attach the ringtone to it then you should receive a text in about 1-5mins and it will have the ringtone inside it! You're done

BTW your phone number HAS to have the area code in it.. no parenthesis just the area code + number no spaces nothing

just incase you didn't get how to do it i made a video to simplify it
http://www.youtube.com/v/nzcH7Gje8H0&rel=1