Trick in Window XP: How To Create a Invisival Folder

1.Rename The Folder
When you want to name the folder click ALT + 0160 .if you do that the name of the folder will be invisible.
 
 2.Change The Icon
Right click on the folder > properties > Change Icon .go through the list of icons and then you'll see an invisible icon choose it and then click OK. 

When you do that the folder will be invisible and cannot be seen only if it was selected .

*note:click CTRL + A to select everything you will see a selected space this is your invisible folder