taskbar problem

[Chris]

I'm fairly new to computers. I picked up that recent
virus that has been going around that shuts your computer
off after you connect to the internet however it seems to
have created another problem I cannot seem to fix. When I
open a window in any program it no longer appears on my
task bar. And when I minimize it, it is separate from the
task bar. How do I change it back so that my windows are
lined up on my task bar again?