I would like to view my computer on my Hitachi 52" projection TV.It does not have the monitor hook up on the back.IS THER AN ADAPTER FOR THIS?
Assuming your computer has a VGA output, and your TV has an HDMI input, you would need a VGA to HDMI converter. Like this one:
Here is a link that might be useful: VGA to HDMI
You don't say what the input options and resolutions are available on your television, so I can't give you a definitive answer here.
However, while converters for VGA to NTSC are available, the quality is limited to 640x480 display resolution and usually not very good.