I have triple checked all of my settings and whenever I try to start IIS I get the error below. Here's the strangest thing. I downloaded the source and added some DebugBreak() calls and recompiled it and put it into the designated filter location. When I do this I still get the problem and the DebugBreak() calls are never encountered. This is strange since I put the calls in all the filter entry points on the first line. Error from Win2k. Makes you think it can't find it, but it's there. The HTTP Filter DLL E:\Internet\tomcat\isapi\isapi_redirect.dll failed to load. The data is the error. For additional information specific to this message please visit the Microsoft Online Support site located at: http://www.microsoft.com/contentredirect.asp. Any ideas? Thanks, Dave Brown