UI Architecture -Framework

Hi All,

I am n de process of doing some UI-Mockups.

UI includes web screens for the applications.

The options that I have to generate UI is

1) VS 2005 HTML , host on IIS so client can see

2) Flash based

3) Dreamweaver

Which other tools are good and competitive.

I am sure option 1) is good but wanted to get some views.

What else options do you consider or are there any good forums where I can take a look for UI generation.

Thanks

-Paresh