How do I get a Jap DC Gun to work with USA Games?

I know you aren't supposed to be able to use a Dreamcast Japanese light gun with USA games, as the USA games are region coded NOT to work with these particular games. How may I get around these so I can play the USA version of House of the Dead 2 with the Japanese Sega Dreamcast light gun? They are very accurate and work great for japanese games but I am not good at reading japanese text..

There must be a way (gameshark coding maybe?) to use a Japanese Dreamcast gun on a USA game.

Please answer by replying to my e-mail directly or post reply here so all can learn on how to do this..

Thank you!