I am trying to read a file on a network server (from a Windows XP machine), which I would normally access by asking for \\\\ServerName\\dirPath\\ in the run dia
Impersonation using the win32 modules might work for you. See this ActiveState Recipe
I have used the Technet Runas command line tool manually before. In a pinch you could use that with a subprocess call to copy the file to a local temp file.