I called AT&T because I was only getting a couple bars and the guy suggested the Kies update, this is all new to me. What does the Kies do? Also, now under the USB settings the Kies (Firmware update) is selected (green dot), should that stay on? What are the other selections for? Media player, Mass storage, and ask on connection.?? I was trying to download a couple song (MP3) to my Captivate and didn't have success, I connected the phone via USB and it just showed "connecting" on the phone screen and then a message about cancelling Kies by hitting the home button? Does anyone have an easy way to explain some of this to me? Thank you sooo much!