No problem. Thanks!

The Sunbelt blog has screenshots of scam sites where you can pick up such infections. You might want to have a look at these and avoid any such sites in the future.

http://sunbeltblog.blogspot.com/2006/12/some-more-new-scam-sites-to-add-to.html

http://sunbeltblog.blogspot.com/2006/12/new-scam-sites.html

And a whole lot more here:

http://forum.avast.com/index.php?topic=25152.msg205892#msg205892

You should also check that Sun Java is up to date if you have it on your computer.

http://www.java.com/en/download/index.jsp

Check in Control Panel>Add/Remove and uninstall any older versions as these are a security vulnerability.