Dstacy,
I assume that you have allready created your ringtone for your phone in the right format (mp3 for v600)). Most people have a data plan with their phones. If not this will only cost you for a text message. Use this website to upload the ringtone,pics, themes to your phone. Click the link below
Free Ringtones, Wallpapers, Videos, Games - FunForMobile
no cables needed. It just shows up as a text message. You then download and save it to your phone. Its free to use. Ive tried it. It worked for me when I sent a mp3 to my phone.
Darlinglove, if your carrier is not in the list and your phone uses a
sim card just select cingular as the carrier and it should work.