[doodlebug]

Hey John, anytime those pesky box's show up in the middle of the screen, DON'T CLICK ANYTHING!!!!!!!!!!!!!!!!!!!! Pull the cable out that's feeding the internet out of the computer! This cut's there control of your computer!
Then control-alt-delete, all three at once. It may shut down, Let it. Then run your virus scan. I lost a computer too, because it locked it up.

Hope this help's!

Cheer's, Neil.