It could be your computer is hijacked.. to find if that is the case, you
need to install the antispyware programs mentioned below. After
installation, update them with the latest definitions, then scan your system
and get rid of a probable hacker's tool in your computer.
Before you start scanning, remove the internet connection line from the
computer to avoid posible interference from the internet. If you do find
any spyware but have trouble deleting it, run the programs in Safe Mode to
improve results.
To logon in safe mode restart the computer and as the first logo screen
appears, press F8 and repeat at one second intervals for three or four
times.
SpywareBlaster guards against spyware, it doesn't scan and delete parasites,
it prevents them from installing. And HijackThis is used as a last resort
in tough cases, because it requires experience to interprete the scann
results... if you should have to rely on it, you need to save a Log and post
it at a HijackThis help forum to get helps from knowledgeable folks on what
you can safely delete.
Microsoft Windows AntiSpyware (Beta)
http://www.microsoft.com/athome/security/spyware/software/default.mspx
Adaware SE, Spybot S&D, SpywareBlaster, CWShredder, HijackThis,
CoolWWWSearch SmartKiller MiniRemoval.
http://www.majorgeeks.com/downloads31.html
HijackThis Help forums.
http://www.spywareinfo.com/~merijn/forums.html
HijackThis tutorials.
http://www.tomcoyote.org/hjt/
http://www.spywareinfo.com/~merijn/htlogtutorial.html
Regards.