A nice freebie from Ace Labs
S.M.A.R.T. vision utility is intended for automatic diagnostics of status of the modern Hard Disk Drive (HDD, hard disk, drive) with PATA (ATA-3 - ATA-7) and SATA interface, supporting S.M.A.R.T. self-monitoring technology (Self-Monitoring Analysis and Reporting Technology) and working in РС-compatible computers under Windows (95/98/ME/NT/2000/XP).
http://www.acelaboratory.com/downloads.php