When you first open the Dreamweaver CS4 a list of recently edited files appears. Is there any way to clear that list?

In CS3 (Might be the same in CS4) there is an option on the bottom of the welcome screen and in the preferences (under general) to show (or not) the welcome screen when you start up DW.

As for clearing the list, I don't know of any way to do that. You can hide 'other' projects by opening up several 'ok' files b4 closing DW.