auto map to network drive

I have one Win2k server map to the NT4 server. whenever i relogin to Win2k server, the map drive alway prompt for the password. Can i make to connection from Win2k server to NT4 server to be permenent without have to everytime key in the password when i relogin to the Win2k server. Anyway to keep the password in the list where i done have to type everytime. Thank

Sam