Hello all, I want some template code to assert if the passed in template type is NOT derived from a particular base class. I've looked through the Template Metaprogamming book, but haven't seen anything that can do this, but I seem to remember something along those lines. Can anyone help? James This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.