President Clinton’s plans to set up a web rating system (CI No 3,206) apparently stand little hope of success, according to executives at Solid Oak Software Inc. The company says the plan is simply a PR stunt on behalf of the government designed to erase fears of parents and others concerned about the availability of adult material on the internet. Solid Oak says the system, which will mean anyone wanting to publish material on the web will have to first ask permission and if they are refused will not be indexed in popular search engines, will lead to unfiltered search engines.