if len(sys.argv) <> 3 and len(sys.argv) <> 2 :
print str("\nUsage: vcard2xml.py source_file [destination_file]\n\n" +
'\tWhen only <source_file> is specified will overwrite the existing addressbook.\n'+
if len(sys.argv) <> 3 and len(sys.argv) <> 2 :
print str("\nUsage: vcard2xml.py source_file [destination_file]\n\n" +
'\tWhen only <source_file> is specified will overwrite the existing addressbook.\n'+