Dreamweaver CS6 is the latest version and it has some responsive design tools in there but they are not very good. Adobe is also taking DW to its subscription service so there will be no more updates. I bought it not knowing that it was going to subscription and would not recommend it. It also has serious bugs in it that Adobe have refused to fix. The included FTP program is a nightmare!
You could possibly try to find a cheap copy of DW 5.5 or another previous version and then pick up and modify a responsive template. There is a good open source template out there, which I have used to good effect ... Google YAMB. There are also plenty of premium ones too.