Ouch...you should provide more information like what type of computer this is on (i.e. Mac or Windows). Then provide the version of operating system it is running. I am sure there is someone here on pinside that could provide better steps than myself.
If this is a Mac, you might be in the clear.
I would refrain from rebooting your computer until you feel comfortable with doing so and after completing other steps. Rebooting the computer might trigger a script that was installed.
First thing I would do is backup the computer, so you do not lose any important files.
If you are on windows I would run any antivirus software you have installed with a full system file check. In addition I might run windows file check utility to ensure all of the windows files are up to date and that none have been changed.
Make sure you keep track of any steps you take.
Good luck.
Waxhaw, NC
