WINDOWS XP TRICK

Want to hide videos and other files:
Then follow the steps :
->Open a folder and click on "Tools" on the menu bar.
->select folder options
->a small window appears
->click on the view tab
-> disable the feature "hide extension name of the files"
->then apply the changes made
->now u can go to the directory in which the file you want to hide is present.
->right click on the file and select rename option
->type a desired name of the file and give a different extension name
  For eg.:sumit.abc , the name after the dot is the extension name
->If you want to use the file again, change its extension name back to its original.