how to protect my pc applications ?

we have many software to lock particular application in mobiles it's common but u know we have softwares to lock some applications  in our pc too . password door is a software which is used to lock applications in your pc and also i prefer this software because its size is less i.e 595 KB install this app in your pc and select protection to perticular app which you already installed in your personal computer like opera,word pad,excel etc.

note:click above link to download to get secure access