Check to be sure Active Scripting, ActiveX, and Java are not blocked
Open Internet Explorer.
Click on the Tools menu> click Internet Options> click Security>click Default Level>click OK.
Clear Temp Internet files
Open Internet Explorer.
Click on Tools menu>click Internet Options >Click the General tab >Under Temporary Internet files, click Settings >Click Delete Files >Click OK
Click Delete Cookies >Click OK
Under History> click Clear History and then click Yes > Click OK.
Check that you have the latest version of Java ( Version 5.0 Update 9)
If not uninstall older version from contol Panel and reinstall new from
HERE for Windows