Attached Link: http://anothertaskmanager.cjb.net/

This program will do it in 98 and ME. I don't think you need such a program on 2000 or XP. The setting does not seem to stick. The settings. Every time you start up the program you have to reset it to idle. I think there is a way to make the short cut to the program auto set it to idle but I don't know the syntax. There may be other registry hacks that could do the same thing but I don't know how to do it. Use with care.