I've gotta v400 with cingular. Using p2k manager to connect with data cable. Can move pics and sounds back and forth from phone to computer, but when I put ringtones from computer on phone, they will play when I go to 'sounds' in the menu, but when I set them as ringtone, they will not play for incoming calls. When I try to check my ringtone after setting it to one i've transferred from computer, it won't even let me see what ringtone i'm using until I switch back to an original one that came with phone or downloaded from cingular. Any ideas?