workflow development in sharepoint 2007 using Visual Studio

I happened to attend to Suneetha's issue on workflow. I discovered it as a potential source of information to know more about what I am missing to know about integrating what i learnt differently. Though her issue was related to debugging workflow.. Its truly worth knowing everything about it.

When I was in ERS (Evangelism Rhythmic Services), I used to work on Windows Workflow Foundation with Visual Studio(default) and Sharepoint with integration with Visual Studio for custom webparts.

I feel the following links gives an immense information about the topic.
Workflow Development in Visual Studio 2005: http://msdn2.microsoft.com/en-us/library/ms461324.aspx
Debug Your Windows SharePoint Services Workflow: http://msdn2.microsoft.com/en-us/library/ms455354.aspx

Thanks to Eilene Hao, Program Manager, Microsoft Corporation for such an wonderfull presentation. One can also find the same in link below.
http://msevents.microsoft.com/cui/WebCastEventDetails.aspx?culture=en-US&EventID=1032301596&CountryCode=US