Password protect a USB printer?

I'm trying to figure out how to password protect a USB laser printer that is shared between two 10.4.x G5s. I don't mind altering the cupsd.conf file, I just need some clear directions. I looked at the CUPS documentation online, but found it a little less "user-friendly" than I'd like.
What I want to accomplish is that a password is required to print from either Mac, and, if possible, that the password is different than the user's login. I'd also welcome the recommendation of any third-party software that can do this.
Thanks.
G5 1.8 DP / 1gb RAM   Mac OS X (10.4.3)  

The first flash drive I ever bought was a Lexar 128mb and there was software that came installed on it to allow for password locking of the drive.
They don't have it for download anymore, and it didn't work for anything but a Lexar drive anyway.
There are several companies that make "universal" security programs for flash drives both Win and Mac.
Google "Password Protection for flash drives" and you'll be treated to a host of results. Your best bet may be here: http://www.rohos.com/free-encryption/
Message was edited by: MaclessInAZ

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