I'm finding it really difficult to find an introduction to the object model used within Microsoft SharePoint Designer 2007. For some reason, the online help if full of "Page not found". I suspect it's similar to the object model used in Internet Explorer DOM. The reference manual is in MSDN online (but not in my local copy) but as with many help systems like this, you have to know what you're doing pretty well before you can use a reference.
All I want to do at first is implement a darn macro to paste text into a web page without having to keep click Edit, Paste Text, OK :-)
Cheers, Rob.