I'm wondering , I want to get the Virgin Mobile Rumor Touch , but I know that Virgin Mobile kinda limits what you can send to your phone . And buying ringtones when you can get it free makes no sense . So I was wondering , can I use the USB Cord . . or would I have to buy a separate SD Card and change the ringtones files . ( Please don't sent any links to sites ) I know what I'm supposed to put them on it already . I'm just curious .