Thanks Fletch, though I've used Nolo's books and forms for other purposes it hadn't occurred to me that they might have anything specific enough to be of much use. In fact, though, tey have a whole section for developers including a book called Web and Software Development that goes in depth into the legalities of using open source code such as CPAN modules within professional projects and includes sample contracts that are designed to cover all the bases and protect you and the client when you write code that may either be contributed to CPAN or use code from CPAN. I'll post a review of this book from the perspective of a Perl programmer who does both open source a proprietary work after I get done reading it if noone objects.

Web & Software Development: A Legal Guide

Edit by castaway - Fixed link

2005-02-21 Janitored by Arunbear - added title to long bare hyperlink, to prevent distortion of site layout