A lot of folks have difficulty getting time correction software to work on their PC. If that's you then you should try Dimension 4, a free utility that gives you the choice of connecting to a time server either by standard TCP protocol or by the more common (and more problem-prone) SNTP protocol.

If you haven't yet got a time correction utility, this is the one. It's free, it's easy to use, and it has every function that you could conceivably want. Because it works from both the command line and Windows, it's ideal for batch files, too. (292KB)

[1] Dimension 4
Website: http://www.thinkman.com/dimension4/
Download link: http://www.thinkman.com/dimension4/download.htm
Author: Thinking Man Software
Current version: 5.0.35.0
Version date: unknown
License: Freeware
Download File size: 206KB
Operating Systems Supported: Windows 2000, XP, Server 2003 support (including the ability to run as a service)
Additional Software Required: None
64 Bit Capable: Unknown
Portable Version Available: No
Non-English languages supported: None
Other relevant information: None