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Well I believe that on XP you must have Admin or Power User rights and Load/Unload driver rights to install a LOCAL printer, to install a Network printer may require the same rights on XP, but a normal user might be able to add a network printer on Windows 2000
If the drivers are already on the system then the file copy would not need to be completed only a connection which is typically in HKCU - Though I would think that on XP it still "should" fail, but would probably work just fine on 2000
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