Upcoming Posts: Have not been regular with my blogging in the last month, did lots of R&D on the InfoPath 2007 browser enabled forms and Form services, my future posts will be in the following areas:
A) Multi-select List Items in a browser enabled InfoPath form, which was earlier thought not to be possible with Form Services, stay tuned for that post.
B) Cascading dropdowns using code-behind InfoPath solution and owssvr.dll for dynamic filtering within the dropdowns using XML.
Coming back to Forms Based Authentication, here is a nice step-by-step tutorial, I found on Enabling Forms Based Authentication in SharePoint 2010: http://blog.summitcloud.com/2009/11/forms-based-authentication-sharepoint-2010-fb/
For enabling FBA on SharePoint 2007, refer: http://blog.summitcloud.com/2009/10/enable-forms-based-authentication-for-sharepoint/
Stay tuned for my interesting hacks on InfoPath 2007. Till then Happy Programming :)