I just purchased a geforce 7600gt card made by evga which had 2 dvi ports and i'm using a roswell LCD that only supports 6x refresh rate before i got the card this monitor had been using with a geforce FX 5500 and geforce 6800gs without this problem; now, however the 7600gt was in place, the monitor prompts a pane that saids output signol not supported was mostly because of the card's flash rate was exceeded it's limited(maybe 75 or a bove at default) it does the same in windows before i installed the driver, but now before booting into windows how can i change( or lower) it's default refresh rate? thanks.