Internet Explorer 6.0 Crash within Windo

How does one resolve this problem when IE 6.0 crashes when you try to type a www address in the address bar? It has something to do with the version of shell32.dll and version of IE. Also how does one change the menu when windows boot up in Windows 2000 (Windows 2000 Professional /Windows 2000 Server)? Can I change one in the registry?