hamachi question

i have no idea what a hamachi server is im new to private servers and ive been looking around and couldn't find this information,

what is a hamachi server
and where can i find a client that supports hamachi servers

 

small overview of it

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Hamachi is a centrally-managed zero-configuration virtual private network (VPN) freeware application capable of establishing direct links between computers that are behind NAT firewalls without requiring reconfiguration (in most cases); in other words, it establishes a connection over the Internet, to create conditions very similar to that as if the computers were connected over a local area network. Currently available as a production version for Microsoft Windows, and as beta - for Mac OS X and Linux. On August 8, 2006, it was announced that Hamachi was being purchased by LogMeIn.[1]

for more on it visit

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http://en.wikipedia.org/wiki/Hamachi