To install Hamachi Basic as Windows NT/2k/XP (Vista not supported) service you must follow few steps described in: http://www.itsatechworld.com/2006/01/17/hamachi-vpn-solution/
To install Hamachi Basic as Windows Vista service you must download ServiceEx.exe. Copy it to
C:\Program Files\ServiceEx and create there file
HamachiService.ini. Paste there:
ServiceExeFullPath = "C:\Program Files\Hamachi\hamachi.exe"
options = -srvany -config "C:\Documents and Settings\Administrator\Application Data\Hamachi"
desktop = false
Change there config dir. Now open command line as administrator, type there
ServiceEx install HamachiService
Close your hamachi (if runned), type in start/run
services.msc and start your new HamachiService.
Warning! Currently I don't know how to handle “Interact hamachi with desktop” on service tab.