Hi jalalbag,
http://www.java.com/en/download/faq/remove_olderversions.xml
Please remove all SUN Java Virtual Machines installed, then install the last JVM release:
http://www.java.com/en/download/index.jsp
If still no joy...
1. Run the **Microsoft Windows Malicious Software Removal Tool**
2. Download, install, update and run:
**SUPERAntispyware** (freeware) and **Malwarebytes' Anti-Malware** (freeware).
3. Run this online scan (in safe mode with networking, if possible):
**http://onecare.live.com/site/en-us/center/howsafe.htm**
If still no joy... see and follow carefully :"**Checking for/Help with Spyware, Malware and Hijackware****".**Hope this helps,
Vincenzo Di Russo - Microsoft MVP Windows Internet Explorer, Windows Desktop Experience & Security - Since 2003. ~ My Blog: http://blogs.dotnethell.it/vincent/