Create CON Folder

Hi guys, do u knw dat it is not possible to create a folder by name 'CON' (there are few others also i guess) as we create folders easily by any name. But if you want to create a folder by name CON, here's how u do it-
Rename folder from the right click option.....
Now press alt and press 255...
press 255 frm the right sideof the key bords i.e., num pad
now write con and then press enter,
you ll see a con folder in ur pc