Linux workstation integration into Windows shop

Does anybody know of a case-study or HOWTO on fully integrating a Linux
workstation into an existing Windows NT domain?

I've got CUPS using the network printer using smb://username:password@DOMAIN
and mounting shares back and forth works great... but there are a couple of
problems doing things like that:

1. CUPS requires you to setup the printer to use an individual's domain
credentials. If there are multiple users on the machine, that one person's
credentials are using used. Not to mention that the username and password
are freely viewable using 'ps' while printing.

2. Login user names and passwords are different between the Linux and Windows
boxes. Yes, you can manually keep them in sync... but it's a pain.

What I would like to do is make the Windows domain think that my Linux box is
just another host in its domain. That means several things:

1. Login using the NT domain server as the authenticator. Mounting shares
will no longer need a password since it's already supplied.
2. A Linux user will be able to print to a network printer in the domain using
their own credentials (but hopefully not have to supply them again since they
are already logged in).

Is this even possible? If so, were can I find docs on how this is done?