About me:
I am a web designer with graphic background. I use dreamweaver to code valid xhtml/css. I have no experience in server-side languages.
I even didn't know what is .aspx until i search on google.

Situation:
I got a project of "lead generation website" pretty simple site with static "homepage" and several "more info request contact forms".
I made a website for their company and they want me to design this one too. (as per design quality)

Problem:
The main company website in .aspx so they need this Lead Generation website too in .aspx
Now tell me
Should i code site in .html and then save it to .aspx?
OR
Should i code site in .aspx from start?

I tried .aspx page to preview in browser but it dosen’t render, it shows source code. When it said i need to make testing server in order to see server-side pages locally so i made a testing server using dreamweaver ‘s site define dialogue box then it shows “can not find server error” because http://localhost means URL Prefix isn't mapping local site folder. I tried dreamweaver help too. But it didn’t help me anything.

Please let me know how i can do this .aspx thing
I came here because i found in internet that .aspx isn't much different then simple html page, it just have server-controls so i am asking how to make xhtml page to .aspx and preview it locally on browser.

Hi,
You can't just change the file extension to .aspx and expect to have a complete aspx page. .Net pages are coded in the Visual Studio evironment and are complied code.
So you will need Visual Studio software before you can even begin. To preview locally, the .aspx files need to be in a virtual folder that the IIS (Internet Information Services) server can process.
I hope that helps.

Steve