If you have host keys available in the common \i\c{known_hosts} format,
we have a script called
-\W{http://tartarus.org/~simon-git/gitweb/?p=putty.git;a=blob;f=contrib/kh2reg.py;hb=HEAD}\c{kh2reg.py}
+\W{https://git.tartarus.org/?p=simon/putty.git;a=blob;f=contrib/kh2reg.py;hb=HEAD}\c{kh2reg.py}
to convert them to a Windows .REG file, which can be installed ahead of
time by double-clicking or using \c{REGEDIT}.