Er No!
Adobe-ditches-ASP-NET-Support-in-Dreamweaver-CS4__633653935178776124_blog.htm
Dreamweaver version CS4 to drop ASP.NET support!
dreamweaver_ver.html
These are pre CS4 release and they are just wrong. I have made over 25 ASP sites with DW CS4 and a couple of learning sites in ASP.Net which I have also made using Expression Web 2.
I have recently received my copy of Expression Web 3 and won't be rushing to make that my main development system.
Guess I'm gonna have to make the jump to PHP but it will be a wrench to give up all those neat ASP extensions that I currently use.
Interestingly DMX Zone, Community MX and others remain committed to ASP with their extensions.
regards
Jon