I have just released version 1.5.041 of Rival Chess for Win32 which you can
download from my site athttp://dialspace.dial.pipex.com/town/drive/ycy39/howto.shtml
. The site
also contains some of my limited
knowledge on the subject of chess programming if you're interested and a
page of results of Rival versus other Winboard compatible chess engines
(which, regrettably does not show Rival in a very good light - but I'm sure
things will improve soon!).