Connecting a NEC lcd to ADC port on G4

Here's my problem. I have a G4 with VGA and ADC connections. I also have a NEC 17" lcd with a DVI-D and VGA connections. I am using the VGA port on my LCD so I have to use the DVI-D connection if I want to go to my G4. Is this possible to do without paying more than $50 on some crazy adaptor. I've read that there are adaptors that go from DVI-D to ADC but I've also read that sometimes they don't even work. Has anyone got any information that might help me?
Thanks

High_Jumper,
it is unclear what you are planning to achieve. If you want to connect two monitors to one graphic card you need a card that supports that feature. Standard cards are supposed to supply one connector or the other alternatively, but not both.
Hans

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