One problem I had when configuring tomcat with IIS 5.0 was a 401 error in the W3SVC1 log file. The problem was that the wrong file permissions were set on the isapi_redirect.dll filter file. Giving everyone execute permission on this file fixed this problem. The actual error that was cause was an invalid memory read, causing inetinfo.exe to crash. Just thought this could be added to the Tomcat IIS HowTo doc. Jason Wild
