First, start by installing the most recent version of Java using the insructions below:

Click on the link to Sun's Java below, then click on the ''Java Runtime Environment (JRE) 6u1'' download button. Follow the prompts, accept the license agreement, then download the full ''Windows Offline Installation'' file to your desktop,(about 15 MB), scan it with your antivirus (just to be sure it's clean). Once that's done, if you've already got a Sun Java version on the computer, (It appears like you may not though) open the Control Panel, double click on the ''Add/Remove Programs'' section, then uninstall all previous versions of the J2SE Java listed there. Once that's done, then install Java JRE 6u1 from the downloaded installer.

http://java.sun.com/javase/downloads/index.jsp

Next, be sure to scan the computer for spyware using a good antispyware tool.

Hope this helps.

Grif