* Nobody can create a folder named "Con" & "lpt1"

Try to create anywhere on your hard disk a folder 
called "Con" and "lpt1" (without the quotes). 
Go to a location on your hard disk,
right click, choose "New" and then 
select "Folder" from the menu that appears. 
Name the folder "Con" (without quotes) and hit Enter. 
also try "lpt1".
see that the folder won't be named "Con" or "lpt1"
It will be "New folder".