32bit Windows binaries are available from the SourceForge download page: http://sourceforge.net/projects/viking/files/
Viking runs under Windows 7, Windows XP and other 32bit versions of Windows should also work.
The 32 binaries can also run under 64bit Windows (at least on Windows 7).
Viking relies on gpsd to provide current location positioning, called real-time tracking in Viking.
However ATM, gpsd does not support Windows, thus the real-time tracking mode is completely disabled in Windows builds.