Making desktop wallpaper and backgrounds for a computer can be easily done through Microsoft Paint by finding an image and resizing it to fit the monitor screen. Create desktop wallpaper or background with tips from a software developer in this free video about computer technology.

Blocking unwanted Internet sites on a computer involves clicking the Start menu, going to the C drive, Windows folder, finding the system 32 folder, clicking the Drivers folder and right-clicking the Host File. Guard against malicious Web sites on a PC with tips from a software developer in this free video about computer technology.