ok first of all i am very slow when it comes to phones and i came from an iphone and LOVE the captivate.. only problem i am having is downloading ringtones.. now i know you are suppose to find the sd card on your computer and make a new file called "ringtones". my problem is i cant find my sd card.. what am i doing wrong, can someone please walk me step by step in doing so.. i have found my phone but cant find the sd card on there.. thanks for any help and like i said keep it as simple as possible for me please