Display problems when connecting MBP to LG 30FS4D HDTV

Apologies if a similar post has been asked before. Most questions related to this are with LCD TVs.
Problem description :
1. I connected my MBP to my LG 30FS4D HDTV ( this is not an LCD ). Both handshake and I can see the output on my TV. MBP display the tv control panel. But the output is just like s-video...probably not as good as that either !
How I connected it to the TV :
2. miniDVI to DVI adapter ( $19 )
3. HDMI ( $10 )
What I have tried so far :
4. I changed the resolutions on the MBP tv display from 720p to 1080i, also other resolutions....but none of them is good quality !
Questions :
5. What kind of output should I expect on my tv - I was expecting at least a DVD quality output...but it's no where close to that ?
6. Do I need to get expensive HDMI cable for this ?
7. Is my TV the culprit ?
8. Should I try this on someone's LCD TV ?

For anyone who's facing a similar issue :
Some of these slim TVs switch off other audio input when you connect the HDMI cable ( HDMI is after all, audio and video ). But there is another audio input - the digital optical audio input. In order to get the sound, get a toslink cable ( with optical audio male at one end and a simple headphone male at the other end ) and connect it from your MBP to the TV optical audio input.
http://www.selbyacoustics.com.au/storefrontprofiles/DeluxeSFItemDetail.aspx?sid= 1&sfid=74520&c=84109&i=242809043
I bought mine on apple online :
http://store.apple.com/us/product/TL955LL/A

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Message Edited by alintatoc on 14-Jun-2009 10:44 AM
Message Edited by alintatoc on 14-Jun-2009 10:45 AM
Attachments:
nokia cable.jpg ‏88 KB

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