As this question is placed in XP i should also mention all XP support end April 2014.
it protects the inside of the computer and outside
A case protects a computer when it is dropped.
A transistor
It protects your computer from any viruses.
protects your computer from malicious software that could cause distruction of computer
protects your computer
it protects your computer from virus's
green plants
It guards, and protects your computer screen from scratches.
a computer virus program like" Fire fox", will protect a computer against a virus.
it protects your computer and you will not get any vireses and you will not worry about b uying another computer again
antivirus is som ething which protects your computer from geeting virus in it