I have a client that has produced a daily newsletter for almost 8 years. You can imagine the sheer volume of information that he has and he'd like to make it available in a searchable form on the net. We are relative new-comers to 'blogging' software and one of the goals is to charge a nominal fee for access to this information. Does WordPress have a 'merchant' capability or is there a plugin that will provide this support? If not - can someone please make a recommendation to something that will facilitate this goal?