Windows 2000 CD

Can someone please help us out? Our company resently upgraded to Windows 2000, however the problem we are having is we need to be able to automate the Windows install so all we have to do is put in the CD and it will install all the stuff we need it to automatically with no confirmation screens. Also we were needing it to enter the CD Key we have automatically as thats what always sets us behind is we get in the middle of reloading windows then leave and when we get back its just sitting there waiting for the CD key. Any help on how we could do this?