howto capture and blur the image

Howdy,

Have I got a complicated task for you.....

First: Take a screenshot of the entire desktop/screen. (so that's any opnened or maximized applications the taskbar etc.)
Second: paste that image into a control that can be placed onto a form
Third: blur or distort the image, so that any characters/strings can't be read but you can still make out the applications.
fourth: Make this image fill the screen...

Offcourse, all this in an VB application
Is this possible ?? If yes, HOW...

cheers

P.S. This is not to make an irritating app to anoy people.. It's to lock an application