Please forgive the somewhat naive question. I'm a seasoned C/C++, Java, Perl programmer new to Python and Zope. Hopefully someone can save me a little time. I've modified Shared/DC/ZRDB/sqltest.py and sqlgroup.py to provide some additional semantics that I find very useful. Specifically, I've added range and keyword operations, and comparisons other than equality to sqltest, and I've made a parameterized version of sqlgroup that allows selection of 'and' or 'or' linkages from a variable, making it easier to provide sophisticated search options on a Zope page. I'd like to make these modifications available for public review and comment. The best way I can think of to do this is to make a new Product that provides the new versions and replaces them in DC/ZRDB/DA/SQL. Can anyone give me a brief shortcut on how to do that? I can figure out how to make a Product, but figuring out how to either replace these classes, or to create a duplicate of SQL Method which uses them is not entirely obvious. TIA, -Brad