Is it somehow possible to exclude some files from the internal (local) VCS and thus from "Checkin Project"?

The problem is with autogenerated classes (from Corba IDL), which I never want to have under version control.

As far as I can tell currently I could only make my AbstractVCS.checkinFile() do nothing on such files (with a user-define exclude list), but they would still appear in the "checkin project" Dialog and also they would be unnecessarily "colored" in project view.