Convert to DVI

Hello to all, I would be grateful for any advise on my 17" Monitor. I originally purchased two Apple 17" displays 3 months apart and have been using them on my G5 2.0 with a ATI 9600 Pro 64 meg video card, (1 DVI and I ADC port), with no problems. I purchased the Apple DVI to ADC converter to use for duel display. Again all was fine.
I have now up graded both Monitors for the G5 to LG 22" DVI-1 connectors, and wish to use the 17" Monitors on either my PC with a ATI Wonder Card (DVi VGA) or with the Apple DVI converter to my MacBook Pro.
Currently only only one will convert to DVI. The other displays as best described as one looks at the screen as Negative! just like a Negative Photo film.
The interesting thing when I connect this Monitor directly to the G5 ATI ADC port (no conversion) it's FINE!
If I try to use the DVI port (convert it) it displays the Negative view look! I am baffled but obversely something has failed which seems to point to the Monitor.
Any feed back or advise would be more then well revived. Cheers DH

DV-Video to DVI Converter

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ragamoffyn,
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