I found this code in the new Rebol doc. The post method is useful for easily sending REBOL code and data to a web server that runs CGI. The following example illustrates this: data: [sell 10 shares of "ACME" at $123.45] read/custom http://www.example.com/cgi-bin/test.r reduce [ 'post mold data ] The mold function will produce the proper REBOL string to be sent to the server. --- but when I try it I get Invalid PORT spec of course I supply the correct URL and not the one in the example code