first load the page go to the top toolbar,goto TOOLS..INTERNET OPTIONS..And where it says HOMEPAGE make sure its not some dumb page make sure its the page you want,,If it isnt change it and press apply and retry,If it is then do the following things.

Download...

http://www.safer-networking.org/en/index.html ---spybot search/destroy

then go to http://housecall.trendmicro.com/ and do a virus scan.