Here is the answer to my question!
However, I don't use Explorer or work with any Microsoft applications, which means that this worm could attack any browser. So, if anybody has the same problem, the address at the bottom of the message will help remove the worm.

"Due to the virus referred to as "VBS.Plan", "VBS.LoveLetter.AS", or "Worm.Plan", your browser has inadvertently been pointed to the FortuneCity.com domain. This is in no way an action of FortuneCity. It is caused
by a program written by an unidentified third party which reset your Internet Explorer start page. To remove the virus from your system, please visit Symantec for complete instructions at:
http://www.symantec.com/avcenter/ven...s.plan.a.html.