Old Rear Projections HDTV

I just bought a 7 year old 80 inch rear-projection HDTV.

The HD inputs are RGB-HV.

I use RCN, and I am in Massachusetts, they don't provide prospects for output. Is there any way to convert HDMI or regular component to RGB-HV.

Is it possible to go from HDMI to VGA to RGB-HV or would the quality not be worth it?

Also, would HDMI to DVI to RGB-HV be a solution?

Thanks.

You are trying to convert a digital signal to a analog signal. You will need a conversion box to do this. You can find many places online that sell conversion boxes, but they are pricey!