I've been having problems with my aptiva lt win modem. It's a 56k with the new v90, my isp has a 56k line with v90. It will let me sign on but after that is doesn't communicate with my modem. I've called the isp and they've tried to help me by enter different string lines, they couldn't help and told me to call IBM and see what they could do. Well they told me to download a driver that was upgraded (lucent 5.18) so I did and I still can't get it to work. I'm very confused.