Hey, I've found the java version that is necessary: https:/ /www.oracle.com/webapps/redirect/signon? nexturl=https:/ /download.oracle.com/otn/java/jdk/ 1.5.0_01/jre-1_5_0_01-windows-i586-p.exe tried it on windows xp, and it works, I did it virtualy. I think if java 5.0 is installed on the system, his program will work I've put the java version I used (in the message acessible here: https:/ /sourceforge.net/ p/circuit/discussion/479544/ thread/f2a03dca57/?limit=25) if you do not wish to create an account at oracle. don't forget to delete the spces in the links