Everyone with this phone is having problems I have been trying every meathod for the c650 under windows XP. Even after hours of tinkering I may get it to work for one use and then it quits. I have found a meathod that works for me everytime. C650 users should try this if your having trouble getting MPT to recognize your phone. -----SECTION 1---- Install Software and Prepaire Drivers 1) Install MPT 1.23 http://coma.fsb.hr/motorola/files/Motorola_MobilePhoneTools_1.23c_EN.zip 2) Update it with http://coma.fsb.hr/motorola/files/mobilePhoneTools_2.16_US - update.exe 3) Download and extract the P2K drivers http://bongowireless.com/file_download.php -----SECTION 2----- After all the reboots it may prompt you to start phonetools... DO NOT RUN PHONETOOLS 1) Connect your phone to your PC. Your computer will try to install a modem driver 2) One of two things will happen here... a) If a menu pops up to install the drivers skip to ----SECTION 3---- b) If it installs the driver silently (wihtout prompting you) goto "step 3" 3) Go to your computers hardware listing Click start menu, Right click "My Computer", Click Properties Select "Hardware" tab, click Device Manager 4) Find the Modems sections, locate the Motorola USB modem 5) Right Click the Motorola USB Modem, Select Update Driver -----SECTION 3------ Install Drivers 1) Choose Install from a list or specific location. Next 2) Choose "Don't Search: I will choose the best driver to install". Next 3) Browse for the P2K drivers you downloaded. Select p2k.inf, Next 4) After that installs unplug your phone from its USB cable ------SECTION 4------ 1) Run mobile tools- Create a NEW profile (you may get an old profile to work but for me each profile works ONE TIME ONLY) 2) It should then prompt you to select the meathod you will connect your phone, choose USB, click next. 3) It will then ask you to plug in your phone, do it. It takes about 20 seconds to configure then Voila! -----SEction 4------ Uninstall drivers Sometime the meathod does not work unless I uninstall the drivers and reboot. To be safe I do this every time I'm finished with MPT 1) When Finished Close MPT all the way. It lingers in memory for a while so Hit CTRL+ALT+DElete, go to the processes tab and wait for MPhonetools.exe to disappear completely. 2) Go back into the Hardware devices, choose your modem, right click and hit Un-install. 3) Next time you want to run phone tools start at section 2. My descriptions are long but the process is very short after your first time. It really isn't that big of an inconvenience, especially considering I have 6 Mp3 ringtones I didn't have to pay for!