Here is a workaround for CAB users (and other browsers that can't used the Geocities entry point) users. Note: I've found that if you use CAB.OVL 1.3011b, you can just use the regular Sign my guestbook link.
    Just enter your information here, and I'll cut and paste the information returned in this form into the main guestbook. This will have to be done manually, since geocities doesn't allow me to use CGI scripts.