on a Web Setup, how do I exclude all .pdb files?

Question

In a sample solution on Visual Studio 2008, let's say, I have this:

• myWebSite project (web site project)
• myLibrary project (library project)
• myWebsiteDeploy project (web deployment project)
• myWebSetup project (web setup project)

inside myWebSite there is a myLibrary.dll and myLibrary.pdb witch they are included in the myWebSiteDeploy project and pass to the myWebSetup

How can I tell myWebSeiteDeploy or myWebSetup to exclude all *.pdb files as they are not needed in a deployed website ?