Unfortunately, I don't remember the virus name, or any of the messages I got from the antivirus. I tried to use the chest option but it wasn't available. Oh, well.
Thank you all for trying to help. I guess I just have to reinstall some things...
Actually, it wasn't my computer, it was my brother's computer. I have a mac, and I highly recommend it to anyone who doesn't feel like dealing with stuff like these...