How To Install .JAR/.JAD Game Files

[aguad3]

I have the HTC Touch Pro with Sprint running WM6.1.
I am unable to install some java games I dl'ed.

I moved the .JAR files onto the phone memory and try to install as I would a .CAB just by clicking it but it doesn't work. I get an error message saying "There is no application associated with...Run the application first, then open this file from within the application."

I read that I need to first install an app that can read/open .JAR files.
I also read that I should be able to find a java app in the windows directory but that is not the case.
Can anyone help and point me to where I can dl such an app or give me specific directions on how to install java games?
Also, would I need the .JAD file as well, or will I be able to install just using the .JAR file?

Any help is appreciated.
Thanks in advance.