I am running Vista Premium SP1 and Bitdefender Int Sec 2008. I also have a Palm Treo 700WX running Windows Mobile 5. In order to sync the Treo Pocket PC with the computer, I have to set Bitdefender not to start, then reboot without Bitdefender running. My Treo then will be recognized and sync correctly. I am assuming that this is a firewall issue, but I am not sure how to set up the firewall to let Windows Mobile Device Center through. I woulld appreciate any suggestions. Thank you.