[mikevolzer]

You could try plugging in your phone and selecting ActiveSync, then clicking on the windows (Start) button and right clicking on Computer then go to Manage and Device Manager. Uninstall anything in there you find related to Windows Mobile or your device (Usually under Network adapters, not sure if there is more). Afterward disconnect the phone and restart the computer for good measure, once the computer boots again try to connect. Windows should try to install the drivers again. Maybe something got messed up the first time you plugged it in.

Make sure you allow Windows to download the drivers, sometimes this can take awhile.