The sky is not falling (yet).
First the dems will use the fillibuster to block any right wing theocrat bush nominates and its likely the Senate will not change the rules to shiut down fillibusters.
Second its likely the next president will be a dem and get to make his own appointments. Under the best scenario, Rhenquest will retire then and Hillary will nominate Al Sharpton.
Third conservative judges sometimes turn out to be not so conservative, some liberal and moderate judges were appointed by repubs, like Oconner.
Does look very bad though. Look for WWIII in the senate when bush nominates gonzalez or some similar idiot.