CS6 was tested with XP you didn’t give us your system specs.
Hp Pavilion AMD Anthom CP 3200+ 2.20 GHz <--- does that work?
Forgot to mention.... Dreamweaver wont open at all. I execute the file and nothing happens. It's strange that the programs are all reacting differently.
You are missing some system DLL. Could be related to the specifics of AMD processors, so look for any patches.