I am running a 64bit Windows 7 system at home with DW CS4 and do not have any compatibility issues with the currant versions of any of the WebAssist Extensions.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.