Connect my HD Monitor to iMac ?

I want to connect my HD monitor to my iMac, I have used a mini display to HMMI lead I got from ebay but with little success?
I found the signal from my mac to my monitor very intermittent some times it works but most times Not. I found that when my monitor woke up it would find my mac but it I select the HDMI connection from the list it wouldnt?
Whats the best way to get this to work?

i read that you need a mini-DVI to dvi adaptor then a DVI to HDMI adaptor. I also am trying to decide which way to go. I was going to try just the mini-dvi to hdmi but if you say it doesnt work then maybe I'll try this other way.

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    Message was edited by: Kiz5000

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