It might be a conflict with the phone tools you used has corrupted layered TCP/IP services. Download and run winsockxpfix.exe (Google). It is likely to fix the problem. Additionally, the phone tools (Motorola Mobile Phone Tools does this) installs a modem connection. You can disable this modem in Device Manager, but you are likely to have to reconnect the phone and run the phone tools to make the modem visible.
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