I am setting up a new MacBook Pro. Copied old Dreamweaver 4 from iBook to new MacBook Pro but it won't open. When I put the install disk for the new CS in and try to install the new Dreamweaver, it is grayed out, says it is already installed. I have done a search and deleted everything with Dreamweaver I could find, but it still tells me it is already installed. How do I get past this?