HDD Health 3.3 Beta
HDD Health is a full-featured failure-prediction agent for machines using Windows 95, 98, NT, Me, 2000 and XP. Sitting in the system tray, it monitors hard disks and alerts you to impending failure. The program uses Self Monitoring and Reporting Technology (S.M.A.R.T.) built into all new hard disks, and can predict failures on your hard drives. A host of alerting features include email, local pop-up messages, net messages, and event logging, while using no system resources.
Download: HDD Health 3.3 Beta