JVC-RS420K PROJECTOR help!!

There is a control setting in the menu for reversing the image. This, for 99.99% of all the digital projectors out there.

These things all have menu settings where you tell it which way its going. So they can be used upside down or whatever. Yours probably is on rear projection and you want front. Search around the menu. Which unfortunately will probably be hard to navigate, being backwards and all, but you should be able to find it.