Home Folder Logon Script

I’d like to use a logon script to map to a home folder for my users. I know there’s a script using the %username% variable but I can’t get the one I’m writing to work. The server is a 2000 server with AD and the clients are 95, 98, XP and Win2k. Also, the same script to map a drive doesn’t work the same on all OS’s. Can someone tell me EXACTLY how write the script I need or point me to a site that will enlighten me once and for all? I’ve read many articles on the subject, but they are all so vague and elusive I come away wondering what I just read…….