Since creation of thumbnails can take several minutes, and since CGI-BIN scripts
have no standard means of returning the current status of a script,
remote creation of thumbnails via a CGI-BIN script is not supported.
You can either run WWWthumb.CMD from an OS/2 prompt; or you can
run WWWthumb as an SRE-http addon (which requires the
SRE-http WWW Server for OS/2).