Where did you get it: http://www.hdtune.com/download.html
Cost: Free (v2.55), $34.95 US (v4.61)
Size: 1.4MB
Version: 4.61
What is it: HD Tune is a hard disk utility for Microsoft Windows with many functions such as measure the drives performance, scan for errors, check the health status (S.M.A.R.T.) and securely erase all data.
Free Support: http://www.hdtune.com/contact.html

Note: If anyone wants the latest version of this without the cost please send me a PM! The free 2.55 version doesn't really support HDDs above 1.5TB and lacks a lot of features. It hasn't been updated since 2008.