It could still have been hidden in your system registry..try to delete this entry in regedit and be careful while deleting the entry from registry(do not mess up with any other entry while trying to delete your old jdk entry).
A Moment's insight is sometimes worth a Life's experience.
That is bound to cause problems. You should edit the system environment to fix the path. Control Panel -> System -> Advanced tab -> Environment Variables button Since some program installations mess with the Path you may find all sorts of weird stuff in there. Try this at a command prompt: java -version to see if you are getting the right version. Bill