Good Morning,
If you know the date that these irritants arrived into your PC,
then restore your machine to a date before this happened.
Go to "All Programs", "Accessories", "System Tools", "System Restore".
If you can't do that, or it doesn't work, then visit
http://www.bleepingcomputer.com/
and join, it is free and one of the best places to get help. I had a look
in there just now about how to get rid of Babylon and there is a lot
of advice on this to help you.
To find the help, just type "Babylon" in the search window and it
will take to the area that you need.
Good Luck.
Mike.