Joefuf Hi.
This is the right one,& the official site, USE the OFF LINE installer.
jre-6u1-windows-i586-p-iftw.exe
http://java.sun.com/javase/downloads/index.jsp
Delete all other java, Before install.
Have you created a static IP for both computers ? if not it wont work
Routers are not my strong subject, I suggest you start a new thread &
put in the title, (How do I portfaward 2 computers,) on ONE connection
Peace.