Atlanta's Grady Memorial Hospital is expecting a $200 million private donation, and now supporters hope to attract tens of millions more for the cash-strapped health center. The hospital's management restructuring and the prospect of better days ahead have boosted charitable funds for the institution. Hopes are high that the wave of giving will revive the hospital and allow the facility to replace outdated medical equipment, buy a modern computer system and even develop medical specialties to attract more paying patients.