Patients will be stratified by clinical syndrome as having either primarily A) encephalitis; or B) radiculomyelitis. If patient has combined encephalitis and radiculomyelitis, then the patient will be stratified as encephalitis. CMV therapy with ganciclovir and foscarnet will first be given at an induction level and then a maintenance level. For the first 4 weeks, patients will be given foscarnet plus ganciclovir. Then for the following 20 weeks, patients will be given foscarnet plus ganciclovir with ganciclovir at a lower dose. NOTE: A maximum of 10 patients that have proven to be intolerant to either foscarnet or ganciclovir may receive the alternate agent alone.