ProDesktop User Group(27th April, 2005): User Group for PTC's Pro/Desktop, with tutorials, downloadable add-ons, a picture gallery, and a discussion forum.
Colorado Pro/ENGINEER User Group(27th April, 2005): COPUG offers a contact list and more information for registered users [requires JavaScript].
Pro/Users of the Carolinas(27th April, 2005): Official site offering tips, tricks and administrative information.
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