From Mumsie's Magic Book
Since Mumsie likes the idea of doing Tarot readings by computer, over the internet, she wants to protect her computer against viruses.
Turn the computer on and defragment the hard drive. While it does that, you need to clean the outside of the computer, monitor, keyboard, mouse etc. Chant:
Mother Goddess hear my plea,
keep my computer virus free
let it's files stay where they belong
and my writing flow fine and long.
A little sage smoke for cleansing and salt for protection never hurts, but don't expect spells to do all the work. Install a good virus protection system, back-up your files and only download from sites you trust.